Nauki Techniczne

Archives of Metallurgy and Materials

Zawartość

Archives of Metallurgy and Materials | 2025 | vol. 70 | No 2

Abstrakt

Gear provides an important means of transmission in the automobile, and the service life of the gear teeth has a direct effect on how the engine performs. To enhance the strengthening performance of gear surface, three composite coatings were prepared in this paper by supersonic flame spraying technology, with nickel-based powder as the main material, and ceramic powder WC, TiO2 and Cr3C2 added to it respectively. Hardness tester, scanning electron microscope, X-ray diffractometer and other devices were used to comparatively evaluate the performance of the coatings. Then, static simulation was carried out for the coating. The results show that the coating containing Cr3C2 is superior to the other two coatings in densification and hardness. Finally, ANSYS software was applied to model the gear surface coating, revealing that the gear with Cr3C2 ceramic powder is advantageous over the coating with TiO2 particles.
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Autorzy i Afiliacje

Xinsheng Wang
1 2
ORCID: ORCID
Yang Zheng
1 2
ORCID: ORCID
Guoyong Ye
1
ORCID: ORCID
Zhihan Zhang
2
ORCID: ORCID
Kaixiong Gao
3
ORCID: ORCID
Wenjiang Bi
4
ORCID: ORCID
Yanpei Liu
5
ORCID: ORCID

  1. Zhengzhou University of Light Industry, Hennan Key Laboratory of Intelligent Manufacturing of Mechanical Equipment, Zhengzhou, 430002, China
  2. Zhengzhou University of Light Industry, Mechanical and Electrical Engineering Institute, Zhengzhou, 430002, China
  3. Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics 730000 Lanzhou, China
  4. Henan DBOE Co., Ltd, Nanyang, Henan Province, 473000, China
  5. Zhengzhou University of Light Industry, School of Computer Science and Technology, Zhengzhou, 430002, China

Abstrakt

The welding forces and torque in refill friction stir spot welding (RFSSW) play a crucial role in optimizing welding process parameters, understanding material deformation and flow mechanisms, improving welding equipment, and analyzing tool wear. To measure the welding forces and torque during pure copper RFSSW, an octagonal ring dynamometer (ORD) was designed and manufactured based on ring deformation theory. A measurement system for welding forces and torque was established, and the ORD was calibrated and validated. Welding experiments were conducted under different process parameters to measure the welding forces and torque during pure copper RFSSW. The variation patterns of welding forces and torque throughout the welding process were analyzed, and the relationships between welding parameters and the peak welding forces and torque were established. The results show that the calibration errors for axial force, torque, and lateral force were 0.97%, 3.78%, and 1.56%, respectively, with cross-sensitivity errors below 5%. The primary welding force during the RFSSW was the axial force, with a peak value more than 10 times that of the lateral force. The clamping, plunging, and refilling stages were the key phases where both welding forces and torque increased significantly. The maximum welding forces occurred near the second dwell stage before the end of welding, while the maximum torque was observed during the plunging stage. Axial force was most influenced by plunge depth, torque was mainly affected by rotational speed, and lateral force was strongly impacted by the combined effects of plunge depth and rotational speed. The average prediction errors for the axial force, torque, and lateral force models were 0.61%, 2.25%, and 1.20%, respectively, with a maximum error of 4.67%. These findings are instrumental in optimizing process parameters to achieve higher weld quality. The study has practical implications for industrial applications, particularly in manufacturing electrical connectors and thin-sheet heat exchangers, where high-quality copper welds are essential. This work also provides a foundation for future research into enhancing the efficiency and reducing the energy consumption of the RFSSW process.
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Autorzy i Afiliacje

Xiaole Ge
1 2
ORCID: ORCID
I.N. Kolupaev
1
ORCID: ORCID
Di Jiang
1 2
ORCID: ORCID
Hongfeng Wang
1
ORCID: ORCID

  1. National Technical University «Kharkiv Polytechnic Institute», Depart ment of Materials Science, Kharkiv, 61002, Ukraine
  2. Huangshan University, College of Mechanical and Electrical Engineering, Huangshan, 245041, P.R. China

Abstrakt

This study aimed to improve the fatigue properties of TC4 titanium alloy laser-filled wire welded joints. To this end, the highfrequency ultrasonic impact technology (UIT) was used to implement post-weld impact treatment on the welded part. Nondestructive testing of the phase composition, microstructure, microhardness, static and cyclic tensile properties, and fracture morphology before and after UIT were conducted and comparatively analyzed. The results show that the high-frequency UIT refines surface grains without affecting the weld phase composition, which is still dominated by the martensitic α' phase and does not form the ω phase. Due to plastic slip-induced strain-hardening, the microhardness of the weld surface layer is about 12% higher than before the UIT and about 40% higher than that of the base metal. Before UIT, long and thick cracks at static tensile fracture extend on the specimen surface; after UIT, the static tensile fracture surface is fine and smooth, and tiny cracks expand in the interior. The fatigue limit of the laser wire filling welding (LWFW) in the TC4 titanium alloy joint increased by about 29.4% after UIT. After high-frequency ultrasonic impact, cracks expand in the joint; the fatigue band spacing becomes smaller, and dimples are denser and deeper, while the fatigue limit load increases, effectively improving the fatigue resistance of the TC4 titanium alloy laser wire-filling welded joint.
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Autorzy i Afiliacje

Aiyong Cui
1
ORCID: ORCID
Jialei Zhao
2
ORCID: ORCID
Borong Shan
1
ORCID: ORCID
Haodong Liu
1
ORCID: ORCID
Weiqi Sun
1
ORCID: ORCID
Fangyou Hu
3
ORCID: ORCID
Huakai Wei
1
ORCID: ORCID

  1. Qingdao Campus of Naval Aviat ion University, Qingdao, 266041, China
  2. Liaoning University of Technology, School of Mechanical Engineering, Jinzhou, 121001, China
  3. Wuxi Zhongke Jinyan Laser Gas Turbine Pa rts Co, Lt d., WuXi, 214400, China

Abstrakt

Pb-based piezoelectric ceramics cause serious Pb pollution during manufacturing, Pb-free niobate-based piezoelectric ceramics have strong ferroelectricity and high Curie temperatures, rendering them more suitable for making ceramics. For this reason, this article studies the preparation process, structure, and modification of alkali metal niobate Pb-free piezoelectric ceramics by the solid-state method to improve the environmental protection of the prepared materials and the performance of piezoelectric ceramics. The 0.94(K0.5Na0.5)NbO3-0.06LiNbO3 lead-free piezoelectric ceramics were prepared, study the performances and structural transformations of Pb-free piezoelectric ceramics mixed with other metal materials after adding alkali metal niobates. In addition, their influence on the microscopic morphology and electrical properties of KNN-based ceramics is studied, the optimal compositions and sintering temperatures of the Pb-free alkali metal niobate piezoelectric ceramics were investigated.
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Autorzy i Afiliacje

Ruikun Niu
1
ORCID: ORCID
Yanni Meng
1
ORCID: ORCID
Haiqiao Wang
1
ORCID: ORCID

  1. Jinling Institute of Technology, Nanjing, 211169, P.R. China

Abstrakt

0-3% Nd-doped BiOBr microflowers were synthesized by a one-step microwave-assisted method. Phase, morphology and optical property of Nd-doped BiOBr samples were characterized by XRD, SEM, TEM, XPS and photoluminescence (PL) spectroscopy. The samples were investigated for the degradation of rhodamine B (RhB) under UV-visible radiation of a 35 W xenon lamp for 60 min. The results showed that the degradation efficiencies of Nd doped BiOBr samples were higher than that of the un-doped BiOBr. The 2%Nd-doped BiOBr sample shows the highest photocatalytic activity of 98% and has a good reusability and photostability within three cycles. During the photocatalysis of 2% Nd doped BiOBr, the main active species in degrading of RhB were superoxide radical (•O2 ) and hole (h+).
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Autorzy i Afiliacje

S. Thanasanvorakun
1
ORCID: ORCID
A. Phuruangrat
2
ORCID: ORCID
S. Thongtem
3 4
ORCID: ORCID
S. Jaita
5
ORCID: ORCID
T. Thongtem
3 6
ORCID: ORCID
P. Dumrongrojthanath
7
ORCID: ORCID

  1. Rajamangala University of Technology Lanna, Facult y of Science and Agricult ural Technology, Chiang Mai 53000, Thailand
  2. Prince of Songkla University, Facult y of Science, Division of Physical Science, Hat Yai, Songkhla 90112, Thailand
  3. Chiang Mai University, Facult y of Science, Materials Science Research Center, Chiang Mai 50200, Thailand
  4. Chiang Mai University, Facult y of Science, Department of Physics and Materials Science, Chiang Mai 50200, Thailand
  5. Rajamangala University of Technology Lanna, Facult y of Science and Agricult ure Technology, Chiang Rai 57120, Thailand
  6. Chiang Mai University, Facult y of Science, Department of Chemistry, Chiang Mai 50200, Thailand
  7. Rajamangala University of Technology Lanna, Facult y of Science and Agricult ural Technology, Nan 55000, Thailand

Abstrakt

Gas utilization rate is a very important production parameter in the ironmaking blast furnace (BF), which can effectively reflect the utilization of fuel chemical energy. While hydrogen rich gas (such as shale gas) was injected into BF, with the introduction of CH4 in the hydrogen rich gas, the traditional calculation formula for the utilization rate of binary mixed gas (H2-CO) was no longer suitable for the calculation of the utilization rate of ternary mixed gas (CH4-H2-CO). Based on the principle of oxygen migration in the gas-solid reduction reaction, this paper established and derived the method for calculating the utilization rate of mixed gas after methane-rich gas was injected into BF (the mixed gas changes from H2-CO type to CH4-H2-CO type), it is helpful to analyze the influence of CH4 introduction in hydrogen rich gas on the utilization rate of mixed gas in reduction reaction after injecting hydrogen rich gas. In this paper, the change of gas utilization rates and physical phases of 0.5 mol Fe2O3, 0.5 mol V2O5 and 1 mol TiO2 reduced by different amounts of H2-CO or CH4-H2-CO at 700℃, 850℃ and 1000℃ were studied respectively, some meaningful results were obtained through comparative analysis, which provides a theoretical basis for methane rich gas injection practice of vanadium titanium magnetite blast furnace (VTM-BF).
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Autorzy i Afiliacje

Xudong Gao
1
ORCID: ORCID
Xin Li
2
ORCID: ORCID

  1. Chongqing University of Science and Technology, School of Metallurgy And Materials Engineering, Chongqing, 401331, Pr, China
  2. Ironmaking Division, Institution of Cisdi Group Co., Ltd, Chongqing, 401122, Pr, China

Abstrakt

The Aluminium alloy 7075 (AA7075) reinforced with nano Silicon Carbide particles (nSiCp) has attractive applications in aerospace, automobile, aircraft, turbine blades and electronics substrates because of its excellent properties such as strength, stiffness, corrosion resistance, wear properties and strength to weight ratio. These modern-day industries use conventional operations like drilling, milling to get the required shape and size in order to ease the assembly process. Whereas, the dimensional accuracy of the drilled hole without any defect is vital to ensure the strength of the joint. However, drilling the aluminium nanocomposite is quite challenging due to its heterogenic properties, which requires sufficient knowledge of selecting the appropriate machining parameter setting and high-end strategies to achieve good surface finish, superior hole quality and dimensional accuracy. However, the drilling process is mainly influenced by the quality of the machine, drill tool geometry, tool material, cutting velocity and feed rate. This research aims to investigate the machinability of the fabricated aluminium nanocomposite by conducting experimental drilling tests. In addition, a 3D Finite Element Model (3D FEM) was developed to simulate the drilling process for understanding the influence of machining parameters on critical thrust forces, chip formation, chip morphology, stress and hole quality. The experimental results agreed well with the 3D FEM simulation results in the correlation study, which ensures the accuracy and reliability of the developed 3D FEM. The study also recommends to use low feed rate and higher cutting velocity for reducing the critical thrust force during drilling.
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Autorzy i Afiliacje

C. Prakash
1
ORCID: ORCID
J. Prakash
2
ORCID: ORCID

  1. School of Engineering and Technology, Surya Group of Institutions, Vikiravandi – 605 652, Tamilnadu, India
  2. hool of Engineering and Technology, Surya Group of Institutions, Vikiravandi – 605 652, Tamilnadu, India

Abstrakt

The machinability of aluminum hybrid composites (AHCs) can be enhanced by utilization of optimum composition and cutting parameters. In this study, the machinability of AHCs containing micron-sized TiB2 and B4C particles was investigated using the face milling operation with a double coated cemented carbide tool. The composites, fabricated via cold pressing and microwave sintering, were subjected to the face milling experiments using a CNC milling machine. The influence of hybrid reinforcement content, feed rate and cutting speed on tool wear and surface roughness was examined during the milling of these composites. After the machinability tests, the worn surface of inserts was examined by a scanning electron microscope to see the wear types. The reinforcement content and cutting speed were obtained to have a much greater effect on the machinability and surface roughness of the hybrid composites compared to the feed rate. Either increasing the feed rate or decreasing the cutting speed provided a larger amount of chip removal until the wear limit. Moreover, the feed rate was obtained to be more effective on the tool wear at lower cutting speeds and higher amounts of hybrid reinforcement.
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Autorzy i Afiliacje

I. Sarpkaya
1
ORCID: ORCID
E. Özer
2
ORCID: ORCID
D. Zalaoğlu
3
ORCID: ORCID
M. Übeyli
3
ORCID: ORCID
Y. Fedai
2
ORCID: ORCID

  1. Osmaniye Korkut Ata University, Enginee ring Faculty, Mechanical Enginee ring, 80000 Osmaniye – TÜRKİYE
  2. Osmaniye Korkut Ata University, Engineering Faculty, Industrial Engineering, 80000 Osmaniye – TÜRKİYE
  3. Osmaniye Korkut Ata University, Engineering Faculty, Mechanical Engineering, 80000 Osmaniye – TÜRKİYE

Abstrakt

Mechanical properties of Al6061-B4C composites fabricated by stir casting method, even though over 120 µm B4C reinforcement was used, was evaluated. The big reinforcement also could exert an impact on mechanical properties such as hardness and wear resistance. The presence of the harder particles dispersed in Al6061 increased hardness, which would in turn affect wear performance. The high hardness reduced the contact area between the sample and ball and thus, leaded to the reduced coefficient of friction (COF) and wear loss. The Al6061-12 wt.% B4C composite showed the best wear resistance, resulting in the narrowest and shallowest scar. The higher hardness of the Al6061-12 wt.% B4C composite changed wear mechanism changed from adhesive to abrasive wear so that the best wear resistance could be achieved.
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Autorzy i Afiliacje

Sun Kyu Choi
1
ORCID: ORCID
Bosung Seo
2
ORCID: ORCID
Jang Won Kang
2
ORCID: ORCID
Dae Ha Kim
3
ORCID: ORCID
Hyung-Ki Park
2
ORCID: ORCID
Kwangsuk Park
2
ORCID: ORCID

  1. Convergence Technology Laboratory, Korea Electric Power Corporation Research Institute, Daejeon-Si, 34056, Republic of Korea
  2. Gangwon Regional Division, Korea Institute of Industrial Technology, Gangneung-Si, Gangwon-Do, 25440 Republic of Korea
  3. R&D center, KONASOL, Daedeok-Gu, Daejeon, 34302 Republic of Korea

Abstrakt

A hot compression process was developed to study the hot deformation behavior and microstructure of a high chromium cast iron/low carbon steel laminate on a Gleeble 3800 thermal simulation test machine at a temperature of 950-1200℃. The deformation characteristics and the microstructure evolution of the specimens were investigated. Experimental results showed that the monolithic high chromium cast iron specimen cracked during hot compression, but the formability of brittle cast iron in the core of the sandwich structure was improved. Besides, the two metals showed better coordination deformation performance after hot compression treatment at 1150℃. The simultaneous deformation of high chromium cast iron and the ductile carbon steel changed the deformation mode of the cast iron and reduced the normal stress that the cast iron bore. The coarse carbides in cast iron fractured and dissolved into the matrix after hot compression. The interface between the two metals was well bonded without any interfacial cracks and voids produced, forming a corrugated shape.
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Autorzy i Afiliacje

G. Yuan
1
ORCID: ORCID
C. Yan
1
ORCID: ORCID
H. Wu
2
ORCID: ORCID
X. Xiao
3
ORCID: ORCID
S. Zhao
1
ORCID: ORCID
Z. Yu
1
ORCID: ORCID

  1. School of Mechanical Engineering, Anyang Inst itute of Technology, Anyang 455000, China
  2. Henan Zhengs hang Const ruct ion Engineering Co., Lt d., Anyang 455000, China
  3. Henan Ancai Hi-Tech Co., Lt d., Anyang 455000, China

Abstrakt

This paper reports numerical simulation and experimental evaluation of the cyclic expansion-extrusion (CEE) process of AA6061 aluminum alloy. Commercial software Deform 2D was used to simulate the deformation process. The material model is set up for the simulation problem by tensile tests. Simulation results are exploited including stress-strain field during the CEE process. They clearly explain the mechanism of severe plastic deformation (SPD) of the CEE method, one of the methods to create ultrafine grains (UFGs) in microstructures for the studied alloy. Tensile and CEE tests were performed at room temperature. The corresponding experimental results also show changes in the microstructure and microhardness of the test specimens. After the cycles of the CEE process, the average microhardness of the deformed specimens increased by approximately 150% compared to the initial microhardness. The UFGs in microstructures were obtained after 4 CEE cycles. The average grain size in the microstructure has been achieved at about 5÷6 μm from the initial value of 100 μm. The results of the paper show the applicability of the CEE method in the fabrication of UFGs materials for subsequent special forming processes.
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Autorzy i Afiliacje

Manh Tien Nguyen
1
ORCID: ORCID
Truong An Nguyen
1
ORCID: ORCID

  1. Le Quy Don Technical University, Facult y of Mechanical Engineering, Ha Noi, Viet

Abstrakt

Simple and reliable method was engaged to obtain densely-packed and easy-to-manipulate arrays of iron nanoparticles protected from the potential action of atmospheric factors, which are in demand for catalytic applications. For the purpose, atmospheric arc discharge was initiated in a discharge gap of 10 mm between stainless steel electrodes. The gap was filled with a mixture of micrometre-sized powders of graphite and iron. After passing a direct arc current of 140 A for 2 min, a significant change in the morphology and chemical composition of the initial materials was observed. After a positive polarity was supplied to a smaller electrode, carbon nanosheets with an average width of 200 mm and thickness of about 20 nm that host Fe nanoparticles with diameters mostly ranging from 10 to 40 nm were found. Moreover, the initial oxygen content of 18% wt. was reduced to just 4% wt., as measured in the synthesized nanocomposites.
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Autorzy i Afiliacje

A. Breus
1
ORCID: ORCID
S. Abashin
1
ORCID: ORCID
O. Serdiuk
1
ORCID: ORCID

  1. National Aerospace University, Kharkiv 61070, Ukraine

Abstrakt

Taking pure Al as Alloy 1, the effect of Si content in Al-Si alloy (Alloy 2) on microstructures of Al-Si alloy castings prepared by controlled diffusion solidification with simultaneous mixing was investigated mainly by using theoretical simulation and calculation. The results indicate that at a given superheat, the Si content in the Al-Si alloy essentially affects the liquidus temperature, and thus, its mixing temperature and the temperature difference with pure Al melt, causing the variation of temperature field of the resulted mixture besides the solute field. As a result, both the supercooling degree and width of supercooling zone in the pure Al pockets are altered, and consequently the nucleation rate and the size and morphology of primary α-Al grains are varied. At the same liquidus and mixing temperatures (also the same temperature difference with the pure Al melt), the nucleation rates at using hypoeutectic Al-Si alloys are higher than those at using hypereutecitc ones due to the larger supercooling degree and width of supercooling zone of the former condition than the latter condition. Subsequent experiment results on microstructure observation of the CDS castings verify these results, and further confirm that an ideal nondendritic microstructure can be achieved only when the nucleation rate is up to a critical value (corresponding to 30% of solidified mesh number in the simulation).
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Autorzy i Afiliacje

Tijun Chen
1
ORCID: ORCID
Qinsong Hou
1
Yanghua Liu
1

  1. Lanzhou University of Technology, State Key Laboratory for Advanced processing and Recycling of Nonferrous Metals, Lanzhou 730050, China

Abstrakt

In recent years, advanced high strength steels have been the main choice of automobile manufacturers due to their excellent strengths and decent formability. In this study, the forming behaviour of a martensitic steel (MART 1200) at elevated temperatures, where higher formability and an acceptable strength can be achieved, has been investigated. For this purpose, tensile test experiments have been conducted at room temperature, 175°C, 275°C, 375°C and 475°C in two different strain rates (0.005 s–1, 0.05 s–1). The flow behaviour, elongation capacity, strain rate sensitivity, strain hardening and strain hardening rate of MART1200 have been investigated and fracture surfaces and microstructures have been examined by scanning electron microscope. It has been shown that the strain rate sensitivity of MART1200 increases significantly after 275°C and, for the higher strain rate, a significant improvement up to 80% in the elongation capacity has been achieved in return for a 19% strength reduction at 375°C.
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Autorzy i Afiliacje

N. Sen
1
ORCID: ORCID
T. Civek
1
ORCID: ORCID
O. Elkoca
1
ORCID: ORCID
E. Çevik
2
ORCID: ORCID

  1. Duzce University, Faculty of Engineering, Department of Mechanical Engineering, 81620 Duzce, Turkey
  2. Karabuk University, Faculty of Engineering, Department of Mechanical Engineering, 78050 Karabuk, Turkey

Abstrakt

The influence of welding current decay time on the repair of Co-based superalloy by tungsten argon arc welding spot welding are investigated by means of simulation and experiments. The results show that: the maximum tensile stress of residual stress after welding is distributed in the center area, gradually decreases towards the edge area, and mainly exists in the form of compressive stress in the edge area. On the same welding current, with the increase of attenuation time, the overall trend of temperature and stress distribution, and the stress value increases. The larger the fusion zone (FZ) crack area and the smaller intergranular cracks in the heat affected zone (HAZ) decrease. Currently, there is limited research on the influence of welding current decay time on the repair of Co-based superalloys via tungsten argon arc spot welding.
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Autorzy i Afiliacje

Zhongyao Li
1 2
Li Feng
Jianjun Guan
3
Yan Zhao
1
ORCID: ORCID
Yanhong Yang
2
Jiaojiao Zhu
1

  1. Liaoning Petrochemical University, School of Mechanical Engineering, Fushun 113001, China
  2. Chinese Academy of Sciences, Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Shenyang 110016, China
  3. Shengyang Polytechnic College, Electrical Engineering, Shenyang 110045, China

Abstrakt

Due to their enhanced qualities, such as high rigidity and high strength, fibre reinforced polymers are widely employed in the automotive and aviation industries. To reduce the weight of aviation components, hybrid laminates containing fibre and aluminium layers, such as ARALL (Aramid Aluminium Laminate) and GLARE (Glass Laminates Aluminum Reinforced Epoxy), have recently been developed. Due to the delamination surrounding the holes in GLARE composites, which is the main cause of their low quality, drilling operations are difficult. In this study, a statistical model for delamination during drilling is created using the Response Surface Methodology (RSM), with a core composite design which has two elements and three layers and it is also examined how the input parameters (spindle speed and feed rate) affect the output response (delamination) when working with fiber-metal laminates. The fuzzy logic technique is employed to predict the delamination factor as a function of diverse combination of the input process parameters.
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Autorzy i Afiliacje

M.P. Jenarthanan
1
ORCID: ORCID
M. Karthikeyan
1
ORCID: ORCID
K. Begum Ghousiya
1
ORCID: ORCID

  1. Deemed University – Thanjavur, School of Mechanical Engineering, India

Abstrakt

DP600 steel is widely used in the automotive industry due to its exceptionally favourable combination of high tensile strength and good ductility. In the hot-rolling process, DP600 steel is produced by use of controlled cooling of the rolled strip from temperature above Ar3 to temperature below Ms. In this process, it is quite difficult to control key process parameters such as the time or temperature, and the final microstructure of the material is also affected by the degree of deformation of the material at various stages of the process. This paper presents a statistical analysis of the effect of chemical composition and selected hot rolling process parameters on the microstructure of DP600 sheet with respect to its mechanical properties. Based on industrial data from hot rolling mill combined with extended microstructure analysis, it was possible to find correlations between some of the analysed parameters and material properties. Among many correlations discussed in this work, most notable are those between martensite morphology and mechanical properties, between Mn and Si concentration and martensite morphology and between rolling speed, strain, cooling rate and mechanical properties.
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Autorzy i Afiliacje

T. Kaźmierski
1
ORCID: ORCID
J. Krawczyk
2
ORCID: ORCID
Ł. Frocisz
2
ORCID: ORCID
P. Matusiewicz
2
ORCID: ORCID

  1. ArcelorMitt al Poland S.A. Unit in Krakow, Tadeusza Sendzimira 1 Street, 31-752 Krakow, Poland; AGH Doctoral School, al. Mickiewicza 30, 30-059 Krakow, Poland
  2. AGH University of Krakow, Faculty of Metals Engineering and Computer Science, Al. Mickiewicza 30, 30-059 Krakow, Poland

Abstrakt

Laser welded joint of ferritic low carbon steel DC05 was manufactured as Tailored Blank and examined by non-destructive visual testing and destructive testing by macro- and microscopic examination and hardness measurements. The tensile strength of the welded joint was 280 MPa and corresponds to the tensile strength of the base material. Microscopic observations of thinner plate revealed heat affected zone with coarse grain, in contrast to the thicker plate where coarse grain was not observed. Detailed analysis of laser remelted area on plates after various cold deformation (1%, 4.15% and 12.5%) reveals a significant influence of the plate state on the occurrence of grain growth. The increase in the width of the coarse-grained zone after 12.5% deformation increases by approximately 60% compared to the undeformed state, regardless of the travel speed.
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Autorzy i Afiliacje

J. Krawczyk
1
ORCID: ORCID
K. Pańcikiewicz
1
ORCID: ORCID
Ł. Frocisz
1
ORCID: ORCID
H. Danielewski
2
ORCID: ORCID
P. Furmańczyk
2
ORCID: ORCID

  1. AGH University of Krakow, Faculty of Metals Engineering and Industrial Computer Science, Al. Mickiewicza 30, 30-059 Kraków, Poland
  2. Kielce University of Technology, Faculty of Mechatronics and Mechanical Engineering, 7 Tysiąclecia Państwa Polskiego Av., 25-314 Kielce, Poland

Abstrakt

Wire and Arc Additive Manufacturing (WAA M) enables the fabrication of complex geometrical features and intricate components. SS316L is favoured for its superior corrosion resistance and mechanical strength. However, WAA M-fabricated SS316L components are prone to hot cracking due to their fully austenitic microstructure. Conversely, SS309, with its higher ferritic content, has shown potential in mitigating hot cracking when alloyed with SS316L. In this study, bimetallic SS316L-SS309 thin wall was fabricated using WAA M and subjected to heat treatments at 400°C, 950°C, and 1200°C, each for a duration of two hours, to investigate the resultant effects on microstructural evolution and mechanical properties. The as-built specimens exhibited δ-ferrite dendrites within an austenitic (γ) matrix, with finer grain structures compared to heat-treated samples. Minimal changes were observed in microstructure and mechanical properties at 400°C, while treatments at 950°C and 1200°C resulted in a significant reduction in ultimate tensile strength (UTS), accompanied by nearly double the elongation for samples treated at 1200°C relative to their as-deposited counterparts whereas 14.3% reduction in UTS, Whereas the hardness decrease by 25-35 HV. This study highlights the impact of heat treatment on the microstructural stability and mechanical performance of WAA M-fabricated thin bimetallic austenitic steel structures.
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Autorzy i Afiliacje

Rupendra S. Tanwar
1
ORCID: ORCID
Suyog Jhavar
1
ORCID: ORCID

  1. VIT-AP University, Department of Mechanical Engineering, Amravathi, Andhra Pradesh, India, 522241

Abstrakt


The main aim of this research was to produce, by laser powder bed fusion (LPBF) process, good quality material with nonmodulated martensite structure exhibiting high magnetic field-induced strain value. The microstructure and texture of NiMnGaCoCu alloy were investigated by SEM, TEM, and high-energy X-ray diffraction. It was shown that LPBF process combined with the postprocessing annealing allowed to obtain a homogeneous microstructure with a strong <100> fiber texture along the growth direction. It was also shown that the scanning strategy does not greatly affect the microstructure and crystal structure of the material while the only difference lies in the existence of a double texture component for alloy produced by oscillating mode. Finally, the magnetic field-induced strain value calculated for the alloy with non-modulated martensite produced by the 3D printing was about 0.2%.
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Autorzy i Afiliacje

A. Wójcik
1
ORCID: ORCID
R. Chulist
1
ORCID: ORCID
A. Szewczyk
1
ORCID: ORCID
B. Morończyk
2 3
ORCID: ORCID
Ł. Żrodowski
2 3
ORCID: ORCID
R. Wróblewski
2
ORCID: ORCID
M. Kowalczyk
2
ORCID: ORCID
W. Maziarz
1
ORCID: ORCID

  1. Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Str., 30-059 Kraków, Poland
  2. Warsaw University of Technology, Faculty of Materials Science and Engineering, 141 Wołoska Str., 02-507 Warsaw, Poland
  3. AMAZE MET Sp . z o.o., Al. Jana Pawła II 27, 00-867 Warsaw, Poland

Abstrakt

Theoretical modeling of thermodynamic processes of phase separation was carried out, as well as a practical study of the structure and distribution of chemical elements. Based on an integrated approach for the single-crystal system Ni-Al-Re-Ru-Cr- Co-W-Ta, new regression models were obtained that make it possible to predict the chemical composition of phases based on the chemical composition of the alloy. A comparative assessment of the calculation results obtained using regression models and experimental data obtained by X-ray spectroscopy was carried out. The experimental results obtained are as close as possible to the calculated data.
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Autorzy i Afiliacje

V.L. Greshta
1
ORCID: ORCID
O.A. Glotka
1
ORCID: ORCID
K.V. Obnosov
1
ORCID: ORCID
D.E. Sotnikov
1
ORCID: ORCID

  1. Zaporizhzhia Polytechnic National University, Zaporizhzhia, st. Zhukovskogo, 64, 69063, Ukraine

Abstrakt

In this study, the microstructure and catalytic potential of two Al-Ni-Fe alloys synthesised through a melt-spinning process with compositions selected to favour quasicrystalline phase formation were investigated. Microstructural and chemical analyses performed using X-ray diffraction, scanning and transmission electron microscopy methods revealed complex morphology and multiphase composition for both alloys. The presence of a decagonal quasicrystalline phase in both materials and additional crystalline phases occurring along the grain boundaries was confirmed. The catalytic potential of alloys was explored in the phenylacetylene hydrogenation reaction. The Al70Ni15Fe15 catalyst demonstrated catalytic activity with over 90% phenylacetylene conversion and selectivity to styrene exceeding 50% for styrene production under mild reaction conditions, and Al71.5Ni23.5Fe5 alloy provided the substrate conversion of 46% and selectivity over 50%. The presented results provide insight into the experimental verification of the properties of the new sustainable catalyst solutions.
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Autorzy i Afiliacje

A. Zięba
1
ORCID: ORCID
Ł. Rogal
1
ORCID: ORCID
D. Duraczyńska
2
ORCID: ORCID
A. Góral
1
ORCID: ORCID
K. Stan-Głowińska
1
ORCID: ORCID
L. Lityńska-Dobrzyńska
1
ORCID: ORCID

  1. Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Str., 30-059 Krakow, Poland
  2. Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Krakow, Poland

Abstrakt

Hydrothermally synthesized BaTiO3 nanopowders pre-annealed at high temperatures of 900℃ for 4 h in the air were sintered at 1200℃ for 2 h in N2 atmosphere, and their cubic-tetragonal transformation, transition enthalpy, and binding energy (BE) were investigated. The nanopowder crystal structures changed from cubic to tetragonal during annealing or sintering at temperatures above 900℃ with constant tetragonality (1.01). With increasing pre-annealing temperature, the cubic-tetragonal transition enthalpy decreased, and the differential scanning calorimetry (DSC) peak broadened. Pre-annealing in the air increased BE and nonchemical energy distribution in the BaTiO3 powder, reducing the transition enthalpy and sharpness of the DSC curve. This was ascribed to the differences in imperfections from oxidation, such as the density and uniform distribution of Ba among the samples, resulting from the BE shifts of the Ba 3d, Ti 2p and O 1s peaks to higher values in the XPS spectra.
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Autorzy i Afiliacje

J. Lee
1
ORCID: ORCID
J. Jeong
1
ORCID: ORCID
J. Jung
1 2
ORCID: ORCID
H. Jeong
1
ORCID: ORCID

  1. Materials Supply Chain R&D Department, Korea Institute of Industrial Technology, Incheon City, 21999, Republic of Korea
  2. Inha University, Department of Advanced Materials Sci enc e and Engineering, Incheon Cit y, 22212, Republic of Korea

Abstrakt

The utilization of complex polymetallic secondary sulfide concentrate (CPSSC) is difficult, owing to its special structure and composition. In this paper, CPSSC was firstly activated by roasting under atmosphere, followed by hydrothermal leaching under oxygen pressure with water. The mineral phase structure and morphology of the activated products and leached residues were characterized by XRD and SEM-EDS to study the leaching behavior and kinetic characteristics of copper from CPSSC. The obtained results show that the optimum conditions for hydrothermal leaching of the roasting activated products of CPSSC under oxygen pressure with water are as follows: leaching temperatures 185℃, oxygen partial pressure 0.6 MPa, liquid solid ratio 12.5:1, stirring rate 600 r/min. Under the above conditions, the iron and lead existing in the activated products were mostly transferred and remained in leached residue with the state of iron oxide and lead sulfate respectively, and the leaching rate of Cu reached 95.73%. The kinetic analysis show that the extracting of copper from the activated product by hydrothermal leaching under oxygen pressure obeys chemical reaction control model, with activation energy calculated as 41.98 kJ/mol by Arrhenius equation, and the leching kinetic equation of copper could be expressed as: 1-(1-X)1/3=0.437Po21.258w0.728e-5049.7/T t.
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Autorzy i Afiliacje

Y. Wu
1
ORCID: ORCID
Y. Liao
1
ORCID: ORCID
H. Ma
1
ORCID: ORCID
J. Li
1
ORCID: ORCID

  1. Kunming University of Science and Technology, Faculty of Metallurgical and Energy Engineering, Kunming 650093, China

Abstrakt

Corrosion presents a significant challenge to various industries, compromising the integrity and longevity of materials like mild steel. This study explores the efficacy of a polyphenol-rich fraction extracted from the stem bark of Senegalia senegal (PRFSS) as a green corrosion inhibitor for mild steel in acidic environments. The PRFSS extract, containing tannins, phenols, and anthocyanins, was assessed for its corrosion inhibition capabilities through various experimental methods, including gravimetric weight loss, phytochemical screening, and potentiodynamic polarization measurements. Results indicated that increasing concentrations of PRFSS notably reduced the corrosion rate of mild steel and enhanced surface coverage, suggesting effective protective layer formation. Thermodynamic analyses confirmed that the adsorption process of PRFSS onto mild steel is exothermic and spontaneous, with the adsorption behavior fitting Langmuir, Freundlich, and El-Awady isotherm models. FT-IR spectrum analysis further validated the successful adsorption of PRFSS on the mild steel surface, while TGA highlighted the extract’s thermal stability. SEM images corroborated the protective role of PRFSS, showing a smoother and less corroded surface compared to untreated steel. The study demonstrates that PRFSS is a promising, environmentally benign alternative to conventional chemical inhibitors, offering significant corrosion protection for mild steel. These findings open avenues for its application in industries. Future research should investigate the long-term stability and performance of this green inhibitor under diverse operational conditions
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Autorzy i Afiliacje

Y.M. Ohunene
1
ORCID: ORCID
J. Oguegbulu
2 3
ORCID: ORCID
Maia-Obi Lígia Passos
4
ORCID: ORCID
F. F. Mtunzi
5
ORCID: ORCID
F. Ojo
1
ORCID: ORCID
B.J. Okoli
1 5
ORCID: ORCID

  1. Bingham University, Faculty of Science and Technology, Department of Chemical Sciences, PMB 005, Karu, Nasarawa State, Nigeria
  2. Nigerian Defence Academy, Department of Chemistry , Nigeria
  3. Medical University of South Carolina, Department of Drug Discovery and Biomedical Sciences, 29425, Charleston, South Carolina, USA
  4. Federal University of ABC, Center of Engineering, Modeling and Applied Social Sciences (CECS), Brazil
  5. Vaal University of Technology, Institute

Abstrakt

Tetragonal BaTiO3 nanopowders with tetragonality (c/a = 1.01), compacted uniaxially at 300 MPa, underwent sintering at temperatures ranging from 900°C to 1200°C for 1 h. Their densification and microstructure evolution were examined to determine the dielectric constant as a function of temperature (25-150°C) and frequency (102-107 Hz). Increasing the sintering temperature enhanced the densification and grain growth of BaTiO3, demonstrating a linear relationship between them. However, the tetragonality remained unaffected by the sintering temperature. The densified BaTiO3 exhibited a high dielectric constant (εr) across temperatures and frequencies. The activation energy for grain growth varied depending on the primary mechanism of lattice and grain boundary diffusion, ranging approximately from 119.1 to 172.5 kJ/mol across the entire sintering range.
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Autorzy i Afiliacje

J. Lee
1
ORCID: ORCID
J. Jeong
1
ORCID: ORCID
J. Jung
1 2
ORCID: ORCID
H. Jeong
1
ORCID: ORCID

  1. Korea Institute of Industrial Technology, Materials Supply Chain R&D Department, Incheon City, 21999, Republic of Korea
  2. Inha University, Department of Advanced Materials Science and Engineering, Incheon City, 22212, Republic of Korea

Abstrakt

Directly brazing titanium (Ti) alloy and copper (Cu) using silver (Ag) based filler alloy has been recognized to be of limited success owing to the embrittlement of intermetallic compounds (IMCs) presented at joint interface. In the current investigation, strong and reliable brazing of Ti-6Al-4V and Cu was achieved by using a niobium (Nb) diffusion barrier deposited on Ti-6Al-4V base material and Ag-Cu-Ti active braze. The Nb diffusion barrier effectively suppressed the interaction between Ag-Cu-Ti filler and Ti-6Al-4V base material, avoiding formation of brittle Ti-Cu IMCs. Joint consisting of Ti-Nb solid solution, unconsumed Nb interlayer, remnant Ag-based braze and small quantity of tiny Ti-Cu IMC particles was obtained via diffusion bonding at Ti- 6Al-4V/Nb interface and active brazing between Nb interlayer and Cu based material. Bonding strength exceeding the Cu base material property was achieved in the resultant joint, ascribed to elimination of continuous bulk brittle interfacial reaction products.
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Autorzy i Afiliacje

F.L. Wang
1
ORCID: ORCID
L. Bai
2
ORCID: ORCID
H. Yin
3
ORCID: ORCID

  1. Chongqing Industry Polytechnic College, School of Mechanical Engineering, Chongqing, China
  2. Chongqing Industry Polytechnic College, School of Electrical Engineering, Chongqing, China
  3. Structural Design, Chongqing Zongheng Engineering Design Institute CO.LTD, Chongqing, China

Abstrakt

In the paper the role of Zn and Ca in enhancement of creep resistance of MgSn6 alloy has been investigated. The influence of zinc on thermal stability of Mg2Sn phase has been evaluated as well. Three alloys in as-cast and heat-treated condition have been chosen as a research material – MgSn6, MgSn6Zn1,5 and MgSn6Zn1,5Ca1. The microstructure of investigated alloys has been analysed using the scanning electron microscope, coupled with EDS spectrometer to enable the analysis of chemical composition of individual microstructural constituents. Creep tests have been performed. It has been revealed, that the microstructure of MgSn6 alloy consists of α-Mg matrix and α-Mg+Mg2Sn eutectic compound. The addition of Zn caused changes in the morphology of α-Mg+Mg2Sn eutectic compound and formation of Zn-rich phase. Two forms (coarse rod-like primary and lamellar secondary) of CaMgSn phase have been observed in the alloy, containing Ca. It has been found that Zn does not influence the morphology and crystallisation process of Mg2Sn phase, which is less thermally stable than CaMgSn phase. Hence, the CaMgSn phase might have a negative influence on creep resistance of MgSn6 alloy. The best creep properties have been exhibited by MgSn6Zn1,5 alloy after age-hardening treatment.
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Autorzy i Afiliacje

T. Rzychoń
1
ORCID: ORCID

  1. Silesian University of Technology, Institute of Materials Engineering, 8 Krasińskiego Str., 40-019 Katowice, Poland

Abstrakt

Ti-containing and Ti-free 12MnNiVR steels were welded separately by vertical EGW welding with a heat input of 100 kJ/cm. The microstructure, precipitates and inclusions of the welded joints were studied by means of optical microscope, scanning electron microscope and energy dispersive spectrometer, and the mechanical properties of the welded joints such as tensile strength, bending, and impact were tested. Results indicate that microstructure of Ti-free steel (TFS) weld metal is mainly coarse acicular and massive proeutectoid ferrite, coarse acicular ferrite Widmanstatten structure and granular bainite. The microstructure of Ti-containing steel (TCS) weld metal is mainly granular bainite and acicular ferrite. Ti has little effect on the tensile and flexural properties of welded joints, but it can improve the impact toughness of welded joints, from 101.6 J to 176.4 J at the center of weld, from 43.6 J to 80.1 J at the fusion line, from 61.5 J to 163.1 J at the fusion line + 2 mm, increasing by 73.6%, 83.7%, 165.2%, and the content of Ni and Ti in the dimples of impact fracture surface is high.
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Autorzy i Afiliacje

Jiaqing Tang
1
ORCID: ORCID
Jie Li
1
ORCID: ORCID
Kun Liu
1
ORCID: ORCID

  1. Jiangsu University of Science and Technology, School of Materials Science and Engineering, Zhenjiang, 212100, China

Abstrakt

The article presents the results of analysis of thermal operation and hearth lining melting of blast furnaces of various designs on the basis of information from the system of monitoring of thermal operation and hearth lining melting – mathematical model “Hearth” developed in Iron and Steel Institute NAS of Ukraine (ISI NASU). Realization of continuous monitoring of the hearth melting in blast furnaces made it possible to estimate the effect of using “ceramic cup” in terms of the value of heat losses of the hearth and coke consumption for their compensation. It is established that the value of specific heat loss per unit volume of blast furnace in blast furnaces with a “ceramic cup” ~ 0,4-0,7 kW/m3, in blast furnaces without it ~0,9-1,1 kW/m3. Ceramic cup gives savings of about 1 kg/t-HM of coke.
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Autorzy i Afiliacje

B. Kornilov
1
ORCID: ORCID
O. Chaika
1
ORCID: ORCID
O. Merkulov
1
ORCID: ORCID
Y. Shumelchyk
1
ORCID: ORCID
V. Lebed
1
ORCID: ORCID
A. Moskalina
1
ORCID: ORCID

  1. Iron and Steel Institute of Z.I. Nekrasov National Academy of Sciences of Ukraine, Dnipro, Ukraine

Abstrakt

This research involves the dissimilar welding of a novel combination of superalloy 59 and 904L using Hot Wire Turbo TIG welding (HWTT) with ERNiCrMo-13 filler wire. Macroscopic examination revealed defect-free welds with optimized geometry and minimal heat-affected zone. The bead geometry, influenced by capillary action and the Marangoni effect, exhibited a 7 mm crest width, 5.5 mm center width, and 2.6 mm depth. Microstructural analysis through FESEM and EDS revealed a substantial 32.06% Mo-enriched secondary phase in the fusion zone, vital for structural reliability and enhancing weldment mechanical properties. Hardness testing revealed 15% higher values in the weld joint compared to base metals. Cryogenic treatment enhanced the weldment tensile strength by up to 10%, with deep cryogenic treatment (DCT) surpassing as-welded samples by 9.5%. Tensile and impact tests, along with fractography images, revealed microstructure-influenced ductile fractures. Charpy impact toughness of the weld fusion zone, at 89 J, showcases favorable properties, 2% lower than alloy 59 but 11.2% higher than 904L, attributed to DCT.
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Autorzy i Afiliacje

N. Muthukumaran
1
ORCID: ORCID
B. Arulmurugan
1
ORCID: ORCID
R. Sureshkumar
2
ORCID: ORCID
R. Bharathikanna
3
ORCID: ORCID

  1. Department of Mechanical Engineering, KPR Institute of Engineering and Technology, Coimbatore, Tamil Nadu, 641 407, India
  2. Department of Mechanical Engineering, Sri Eshwar College of Engineering, Coimbatore, Tamilnadu, 641 202, India
  3. Department of Agricultural Engineering, Nehru Institute of Technology, Coimbatore, Tamilnadu, 641 105, India

Abstrakt

This research investigates the impact of yttrium and lanthanum reinforcement on the dry wear, friction, and microstructure of magnesium alloy. The research investigates the effects of the processes such as as-casting and post-homogenization. The alloys MgY3.21La3.15 and MgY4.71La3.98 were created using a process of controlled melting and casting in an atmosphere-controlled environment. The MgY3.21La3.15 alloy, after undergoing homogenization, has a maximum hardness of 93.70 HB from 81.61 HB for the as- cast alloy. The MgY3.21La3.15 alloy exhibits a weight reduction of 0.024 g and a wear rate of 2.44×10–6 g/Nm, which demonstrates exceptional resistance to wear. The MgY4.71La3.98 alloy exhibits a weight loss of 0.053 g and a wear rate of 5.3×10–6 g/Nm. Friction occurs in parallel due to wearing, thus the MgY3.21La3.15 alloy has the lowest friction coefficient with 0.090.
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Autorzy i Afiliacje

M. Ali I. Alwakwak
1
ORCID: ORCID
I. Esen
1
ORCID: ORCID
H. Ahlatcı
2
ORCID: ORCID
E. Keskin
2
ORCID: ORCID

  1. Karabuk University, Mechanical Engineering Department Karabuk 78050, Turkey
  2. Karabuk University, Metallurgical and Materials Engineering Department, Karabuk 78050, Turkey

Abstrakt

FeNiCrCuAl high-entropy alloy (HEA )/Ti-coated diamond composites were prepared by spark plasma sintering (SPS). The TiC coating was formed in situ on the surface of the diamonds through a vacuum micro-evaporation process. This study investigated the effects of varying mass fractions of diamonds (3 wt.%, 5 wt.%, 7 wt.%, and 12 wt.%) on the microstructure, microhardness, flexural strength, and wear properties of the high-entropy alloy. The results indicate that the TiC coating on the diamond surface effectively preserves the morphological integrity of the diamond within the FeNiCrCuAl HEA at an ambient temperature of 1000°C. Following sintering, the microstructure of the FeNiCrCuAl high-entropy alloy powder occurs transitions from a body-centered cubic (BCC) phase to a face-centered cubic (FCC) phase. As the mass fraction of diamonds increases, the hardness of the composites gradually increases. The composite containing 12 wt.% diamonds exhibits the highest hardness of 500.2 HV0.5 within the FeNiCrCuAl HEA matrix, which is approximately 15.7% greater than that of the composite without diamond addition. Conversely, the flexural strength decreases with the increase of the heterogeneous interfaces created by the diamonds in the composites. The flexural strength of the composite containing 12 wt.% diamonds is only 277.0 MPa, representing a 51.6% reduction compared to the FeNiCrCuAl HEA. The composite compared with 7 wt.% diamonds demonstrates the best wear resistance, with an average friction coefficient of 0.16.
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Autorzy i Afiliacje

Zhixin Wang
1
ORCID: ORCID
Jiangtao Li
1
ORCID: ORCID
Mengjie Pei
1
ORCID: ORCID
Mingxing Ma
2
ORCID: ORCID
Xiaozhe Cheng
1
Qian Zhang
1
ORCID: ORCID
Xiaoyan Guan
1
Huili Ding
1
Shaopei Jia
1
Qisong Li
1
Quan Huang
1

  1. School of Materials Electronics and Energy Storage, Zhongyuan University of Technology, Zhengzhou, 451191, PR China
  2. School of Mechanical Engineering, Henan Polytechnic Institute, Nanyang, 47300, PR China

Abstrakt

Tempoyak is a fermented durian paste made from an overripe durian under partial anaerobic conditions in a tight closed container. The anaerobic fermentation conducted by Lactic acid bacteria (LAB) can take place from 3 to 8 days in ambient temperature range from 24°C to 34°C and the final pH value is around 3.96 to 4.08. This study focus on the effectiveness of the High-Pressure Process (HPP) in Tempoyak and the relationship between pressure treatment with microbial activity in treated Tempoyak. A High- Pressure treatment of 600 MPa for 5 min on packed tempoyak was applied. Analysis of the pH, moisture content, total plate count (TPC), color and sensory were performed. Throughout four weeks of storage, the result of pH and moisture content showed no significant changes under chilled temperature (–4°C) for non-treated and HPP-Treated samples. The total plate count showed the microbial level of non-treated sample to be slightly higher when compared to HPP sample in both storage conditions. The L* values also showed significant change in the color analysis of the samples. From the analysis performed, HPP was proven to reduce the microbial activity in the tempoyak.
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Autorzy i Afiliacje

M.U.H. Suzihaque
1
ORCID: ORCID
N.A.M. Jamil
1
S.N.Z. Sahabuzan
1
H. Alwi
1 2
ORCID: ORCID
S.F. Abd Karim
1

  1. Universiti Teknologi MARA, School of Chemical Engineering, College of Engineering, Selangor, Malaysia
  2. Universiti Teknologi MARA, Food Processing and Engineering Research Group (FOPERG), Selangor, Malaysia

Abstrakt

Recent surface composite developments have impacted the aerospace, energy, and construction sectors. Friction Stir Processing (FSP) can manufacture high-quality surface composites from lightweight materials. This research optimizes process parameters, including Rotational Speed (RS), Travel Speed (TS), and Number of Passes (NoP), utilizing the design of experiments (DoE) statistical quality tool. The design matrix was created using the Response Surface Methodology (RSM) technique, and the experiments were based on the central composite design (CCD). ANOVA was used to validate the actual and projected models. Optimal FSP process parameters were utilized to create a surface composite of AA7075 with rGO and (rGO + MWCNT) reinforcements. The homogeneous reinforcement distribution on the surface composite was tested using optical microscopy. The average grain size of AA7075-T6 measured as 157±23 μm reduced to an average grain size of 7.5±1.2 μm for the rGO reinforced surface metal matrix composite (SMMC) and ultimately reduced to an average grain size of 6.5±0.7 μm for the (rGO + MWCNT) reinforced SMMC. The reduced fraction of intermetallic was identified in the microstructures, and the altered intensity of the significant XRD peaks was confirmed by X-ray Diffraction (XRD) analysis. Increased microhardness from 168±1.7 Hv (for BM AA7075-T6) to 190±2.4 Hv (for rGO reinforced SMMC) and further improved to a greater hardness of 196±1.8 Hv (for (rGO + MWCNT) reinforced SMMC). The impact strength improved drastically from 16±0.8 J (for BM AA7075-T6) to 21.3±1.1 J (for rGO reinforced SMMC) and greatly enhanced to 24±0.6 J (for (rGO + MWCNT) reinforced SMMC) were observed. The average thermal conductivity value of (rGO + MWCNT) reinforced SMMC showed a greater increase of 30-80 W/mK when compared to the BM. FSPed (rGO + MWCNT) SMMC specimen showed enhanced tribological properties with a reduction of nearly 65% compared to the BM. These results confirmed that the modified surface microstructures in the SMMCs by using FSP help to improve the characteristics of the AA7075-T6 alloy.
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Autorzy i Afiliacje

S.Ch. Kundurti
1
ORCID: ORCID
A. Sharma
1
ORCID: ORCID

  1. VIT-AP University, School of Mechanical Engineering, Amaravati, Andhra Pradesh, India – 522237

Abstrakt

To attain the goal of receiving the well toughened ceramic matrix composite material for radioactive jackets to protect from nuclear radioactivity for commercial and defense applications. This research task is initiated to prepare the composites by preparing the Al-Si alloy at different propositions and infiltrate the alloy into the B4C pellets at different temperatures. This task dealt with the methodology of reactive melt infiltration (RMI) technique and processing of ceramic matrix composites in lightweight. Moreover, it registered the phenomenon and factors influencing the infiltration process and characterization of constituents of the ceramic matrix infiltrated composites. Fine particles of 10 μm boron carbide powder (B4C) was characterized by determining the free carbon content and thermal behavior experiments. By the addition of binder, the densification of porous B4C green preforms and its pressing efficiency were analyzed. Four sets of Si-Al alloys were produced with various combinations and smelting parameters; and were investigated its property through XRD/EDS tests and SEM images. Nominal 50% porosity B4C preforms were infiltrated by various proportions of hypereutectic Si-Al alloys at various batches through pressureless reactive melt infiltration process under inert argon atmosphere with different infiltration temperatures and infiltration duration. The poor infiltration, partial infiltration, changes in physical aspect, wetting phenomena were also discussed.
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Autorzy i Afiliacje

R. Arivumani
1
ORCID: ORCID
C. Ramkumar
1
ORCID: ORCID
D. Rajasekaran
1
ORCID: ORCID
M. Palanisamy
1
ORCID: ORCID
J. Sridharanidharan
1
ORCID: ORCID
N. Dhanaraj
1
ORCID: ORCID
S. Deenadhayalan
1
ORCID: ORCID

  1. Department of Mechanical Engineering, KIT-KalaignarKarunanidhi Institute of Technology, Coimbatore, 641402, India

Abstrakt

In this study, we observed the T'-phase for the first time along the <112> zone axis of the Al matrix. The orientation relationship, shape, misfit value, and interfacial conditions between the T'-phase and the Al matrix were investigated using highresolution transmission electron microscopy (HR-TEM). The T'-phase exhibited a fine cubic morphology, and we clarified each facet by analyzing diffraction patterns and fast Fourier transform (FFT) images. Additionally, we identified the (111)Al //(001)T' , (110)Al //(100)T' interface between the T'-phase and the Al matrix along the [11 2]Al //[010]T' zone direction.
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Autorzy i Afiliacje

A. Ahmed
1
ORCID: ORCID
K. Matsuda
2
S. Lee
2
T. Tsuchiya
2
K. Nishimura
2
N. Numomura
2
H. Toda
2
K. Hirayama
3
K. Shimizu
4
M. Yamaguchi
5
T. Tsuru
6

  1. University of Toyama, Graduate School of Science and Engineering for Education, Toyama, 930-8555, Japan
  2. University of Toyama, Graduate School of Science and Engineering for Research, Toyama, 930-8555, Japan
  3. Kyoto University, Department of Materials Science and Engineering, Kyoto, 606-8501, Japan
  4. Tottori University, Graduate School of Science and Engineering, 4-101 kyoama Minami, Tottori, Japan
  5. Center for Computational Science and e-Systems, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
  6. Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan

Abstrakt

It is known while Al-Zn-Mg alloys extruded materials have high strength, those materials are characteristically occurred to Stress Corrosion Cracking (SCC). Our group have systematically controlled Mg and Zn composition and clarified the relationship between strength and precipitates. The purpose of this study is to clarify the relationship between the mechanical properties and SCC resistance and the microstructure. Therefore, our group controlled the mechanical properties and SCC resistance by adjusting the chemical composition and the quenching conditions of our Al-Zn-Mg alloy extruded materials, and the following two findings were obtained by using SCC test, tensile test, and transmission electron microscope (TEM) observation. The number density of η' phase on Al-Zn-Mg alloy extruded materials affected the improvement of mechanical properties, and the precipitation free zone (PFZ), which is the grain boundary microstructure affected SCC resistance.
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Autorzy i Afiliacje

Tomoo Yoshida
1
ORCID: ORCID
Seungwon Lee
2
Taiki Tsuchiya
2
Satoshi Murakami
2
Kenji Matsuda
2

  1. Aisin Keikinzoku Co., Ltd, Imizu, Toyama, Japan
  2. University of Toyama, Faculty of Sustainable Design, Toyama, Japan

Abstrakt

The objective of this study was to ascertain the impact of Friction Stir Processing (FSP) on the microstructure and hardness of Al-Si alloys of hypo-eutectic (AlSi8) and hyper-eutectic (AlSi16) composition, with a particular focus on thermomechanical alterations in the microstructure. Microstructural studies were conducted on cross-sections using light microscopy and scanning electron microscopy techniques, in conjunction with an analysis of the chemical composition in the micro-areas. Furthermore, electron backscatter diffraction analyses and analyses of the hardness distributions in the stirred zone after FSP were conducted. The utilisation of FSP to modify both AlSi8 and AlSi16 alloys was demonstrated to facilitate microstructural refinement. Based on the results, the remodelling and dynamic recrystallisation of the microstructure associated with the application of FSP treatment were identified.
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Autorzy i Afiliacje

J. Hrabia-Wiśnios
1
ORCID: ORCID
M. Mitka
1
ORCID: ORCID
S. Boczkal
1
ORCID: ORCID
L. Najder
1
ORCID: ORCID
Ł. Grzebinoga
1
ORCID: ORCID

  1. Łukasiewicz Research Network – Institute of Non-Ferrous Metals Skawina Division, 19 Piłsudskiego Str., 32-050 Skawina, Poland

Abstrakt

The primary goal of this study was to comprehensively characterize the microstructure of refractory powder materials, particularly molybdenum (Mo) and molybdenum-rhenium (Mo-Re), in both non-spherical and spherical forms. The characterization was carried out with the use of advanced techniques including scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS) and nanohardness testing. This combination of analysis techniques provided a multi-scale understanding of the microstructural evolution and elemental distribution within the powders. Mo-Re powders were synthesized through powder metallurgy processes, while the spherical powders were produced with the use of the plasma spheroidization technique. Detailed analyses were conducted on the surface of powders, its cross-sections and thin foils. Spherical powders exhibited significant morphological changes, with evidence of rhenium diffusion within the molybdenum grain structure. This study provides detailed microstructural analysis of Mo-Re powders synthesized via plasma spheroidization, highlighting the role of rhenium in enhancing grain stability. The observed morphological changes in the spherical powders are indicative of enhanced material properties, which may influence their performance in critical applications. These findings provide valuable insights into the material properties, which may be crucial for demanding applications in high-temperature and high-stress environments, such as aerospace.
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Autorzy i Afiliacje

A. Czech
1
ORCID: ORCID
A. Wrona
1
ORCID: ORCID
M. Lis
1
ORCID: ORCID
M. Kot
2
ORCID: ORCID
Ł. Major
3
ORCID: ORCID

  1. Łukasiewicz Research Network – In stitute of Non-Ferrous Metals, 5 Sowińskiego Str., 44-100, Gliwice, Poland
  2. AGH University of Krakow, Faculty of Mechanical Engineering and Robotics, Department of Machine Design and Maintenance, al. A. Mickiewicza 30, 30-059 Krakow, Poland
  3. Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Str., 30-059, Cracow, Poland

Abstrakt

In order to increase the resistance of the polyamide 11 (PA 11) surface to sliding wear, the economical low-temperature atmospheric pressure plasma deposition (APP D) technique was used to produce innovative thick Zn/MoS2/graphite/Zn coatings with self-dry-lubrication and self-healing functions [1]. The specific problem was concern on structure characterization in nano- and atomic scale of these effects. The self-dry-lubrication was possible thanks to the possible breaking of weak van der Waals’ bonds both in graphite and MoS2 structures. The effect was described as a result of the shifting of atomic layers in both MoS2 and graphite layers within the same phase and at their boundaries while the self-healing effect occurred in the form of closing micro-cracks in the structure of the coatings and rebuilding van der Waals’ atomic bonds.
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Autorzy i Afiliacje

Ł. Major
1
ORCID: ORCID
D. Kopp
2
ORCID: ORCID
B. Major
1
ORCID: ORCID
J.M. Lackner
2
ORCID: ORCID

  1. Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Str., 30-059 Cracow, Poland
  2. Joanneum Research Forschungsgesellschaft mbH, Institute for Sensors, Photonics and Manufacturing Technologies, Research Group Laserand Plasma Processing, Leobner StraSSe 94, 8712 Niklasdorf, Austria

Abstrakt

Aluminum-silicon alloys have become a popular choice for applications in the automotive and aerospace industries and have proven themselves through their fault-tolerant processability and respectable static properties at comparatively low costs. Current research has focused on a water jet gun for firefighters. This is an essential device used by firefighters and other emergency response teams to control and direct the flow of water from fire hoses. The role of the research is also to understand the performance of enriched materials in the construction of water guns for firefighters. Through a series of friction and wear tests on aluminumbased alloys, the research establishes correlations between wear performance and the mechanical properties of the materials. These findings provide critical insights into the design and performance of pressure guns, thereby helping to increase the safety and effectiveness of firefighting equipment. The results of the study provide practical recommendations for increasing the durability and functionality of essential firefighting tools.
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Autorzy i Afiliacje

M.G. Minciuna
1 2
ORCID: ORCID
P. Vizureanu
1 2
ORCID: ORCID
A.V. Sandu
1 2
ORCID: ORCID
B. Istrate
3
ORCID: ORCID

  1. “Gheorghe Asachi” Technical University of Iasi, Faculty of Materials Science and Engineering, Blvd. Mangeron, No. 51, 700050, Iasi, Romania
  2. Academy of Romanian Scientists, 54 Splaiul Independentei St., Sect. 5, 050094 Bucharest, Romania
  3. “Gheorghe Asachi” Technical University of Iasi, Faculty of Mechanical Engineering, Blvd. Mangeron, No. 51, 700050, Iasi, Romania

Abstrakt

Etlingera elatior (EE ), commonly known as torch lily, wild ginger, and Bunga Kantan in Malaysia, is a versatile plant from the Zingiberaceae family, valued both for its ornamental blossoms and culinary uses. Infrared (IR) drying has emerged as a promising technique due to its superior drying efficiency and potential to preserve the quality of plant materials by minimizing shrinkage and maintaining material integrity. This study investigates the effects of two drying methods; IR drying and oven (OD) drying on the material characteristics of EE, specifically focusing on drying kinetics, color, shrinkage, and antioxidant capacity. EE samples were dried at temperatures ranging from 50 to 80°C until they reached a constant weight. The findings indicate that IR drying achieves a faster drying time and higher drying rate compared to OD drying. The total color change (ΔE) was lower for OD drying, with a value of 18.96, compared to 23.40 for IR drying. Regarding shrinkage, IR drying resulted in the smallest shrinkage (124.91), while OD drying showed slightly higher shrinkage (132.41). These results suggest that IR drying at 80°C is a favorable method for preserving the material characteristics of Etlingera elatior.

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Autorzy i Afiliacje

Habsah Alwi
1 2
N.A. Md Zaki
1 2
ORCID: ORCID
M.U.H. Suzihaque
1 2
ORCID: ORCID
S.F. Abd Karim
1 2
U.K. Ibrahim
1 2
ORCID: ORCID
H.Z. Abidin
1
M.A.A. Ramli
1

  1. Universiti Teknologi MARA, School of Chemical Engineering, College of Engineering, 40450 Shah Alam, Selangor, Malaysia
  2. Universiti Teknologi MARA, Food Processing and Engineering Research Group (FOPERG), 40450 Shah Alam, Selangor, Malaysia

Abstrakt

The current study delves into a detailed analysis and optimization of an autonomous mobile platform, meticulously designed to navigate, and operate within the complexities of rough and challenging terrains. This platform isn’t just an ordinary machinery; it’s equipped with a manipulator arm, strategically designed to facilitate smooth sample retrieval, even in the most rugged environments. The autonomous mobile platform is suitable even for remote and hostile terrain, inaccessible to most conventional means of exploration. With a robust design and advanced capabilities, it’s crafted to navigate through obstacles effortlessly, ensuring that no potential sample remains uncollected. But the autonomous mobile platform doesn’t stop there, as it’s further distinguished by the integration of communication technology, which elevates its functionality to a whole new level. Real-time data transmission is one of the defining features of the platform. It allows for the continuous flow of information between the platform and its operators, facilitating swift decision-making and seamless coordination. This real-time data transmission isn’t limited to basic telemetry but encompasses a wide range of sensor data, providing valuable insights into the surrounding environment and the platform’s status itself.

But perhaps one of the most revolutionary aspects of this platform is its ability to stream live video feeds to its operators. The opportunity to witness the sample retrieval process unfold in real-time, from the comfort of a remote command center, can be one of the advantages offered by the autonomous mobile platform. This live video streaming feature isn’t just a luxury; it’s a gamechanger. It provides operators with a visual perspective that surpasses mere data points, enabling more informed decision-making and better situational awareness. Additionally, the manipulator arm of the platform isn’t just a passive tool; it’s a versatile asset that significantly extends its capabilities. With a range of motion and precision that rivals even the most skilled human operators, the manipulator arm ensures that samples can be retrieved from almost any location, regardless of accessibility or terrain. Whether it’s collecting geological samples from a steep slope or extracting soil samples from beneath the surface, the manipulator arm gets the job done with unmatched efficiency and precision.
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Autorzy i Afiliacje

A.M. Țîțu
1
ORCID: ORCID
D. Bâlc
2
ORCID: ORCID
M. Nabiałek
3
ORCID: ORCID
M.L. Rozemarie
4
ORCID: ORCID
E. Bâlc
2
ORCID: ORCID

  1. Lucian Blaga University of Sibiu, 10 Victoriei Street, Sibiu, Romania
  2. National University of Science and Technology Politehnica Bucharest, 313 Splaiul In dependenței, București, Romania
  3. Częstochowa University of Technology, Department of Physics, Armii Krajowej 19 Av., 42-200 Częstochowa, Poland
  4. “Gheorghe Asachi” Technical University of Iasi Faculty of In dustrial Design & Business Management, 29 D. Mangeron Blv., Iasi, 70005, Romania

Abstrakt

The evolution of microstructure, texture, phase composition, and dislocation density distribution in Fe-based shape memory alloys processed by high-pressure torsion (HPT) at room temperature was investigated using synchrotron radiation and electron backscatter diffraction. The initial material was a hydrostatically extruded sample that underwent additional heat treatment. Before HPT deformation, the disks were heat treated at 1200°C for 5 mins. to relieve the stresses. The starting Fe-based material was characterized by a strong fibre <111> texture and coarse columnar grains with an average size of approximately 200 μm. The HPT process alters the initial <111> strong fibre texture to a typical shear texture with dominating B, B, A1* and A2* components. As deformation proceeds marginal precipitation of β phase occurs. The precipitation process seems to be related to the shear magnitude, as the volume fraction of β phase increased linearly with shear. Furthermore, the precipitates produced by HPT form a typical texture for bcc metals with F and J1 components.
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Autorzy i Afiliacje

M. Czerny
1
ORCID: ORCID
A. Szewczyk
1
ORCID: ORCID
P. Petrzak
1
ORCID: ORCID
J. Skiba
2
ORCID: ORCID
N. Schell
3
ORCID: ORCID
R. Chulist
1
ORCID: ORCID

  1. Institute of Metallurgy and Materials Science PAS, 30-059 Krakow, Poland
  2. Institute of High Pressure Physics of The Polish Academy of Sciences,Unipress, 29/37 Sokolowska Str., 01-142 Warsaw, Poland
  3. Institute of Materials Physics, Helmholtz-Zentrum Hereon, Max-Planck-Strasse 1, D-21502 Geesthacht, Germany

Abstrakt

The narrow bandgaps of silver nanostructure and its derivatives make them photocatalytic-efficient. This bibliometric examines silver nanoparticle research in photocatalysis to identify its growth, research gap, and trends. The 1,941 Web of Science Core Collection publications from 2018 to 2023 were used as research data. The search used Publish or Perish, and the investigation was established on topic area with titles, abstracts, keywords, and terms co-occurrence in the study of silver-based photocatalyst. The visualisation was done with VOSviewer. The number of papers on silver nanoparticles and their derivatives as photocatalysts fluctuated, peaking in 2019. The publications focused on visible-light-irradiated photocatalysts. These findings also revealed a research gap that can be filled by studying silver derivatives including silver chloride, silver oxide, silver sulfide, and silver iodide. This bibliometric study should help researchers examine silver nanoparticles in photocatalysis.
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Autorzy i Afiliacje

R.M. Zahrah
1
ORCID: ORCID
M. Norsuria
1 2
ORCID: ORCID
M.N. Natashah
2
ORCID: ORCID
I.S.M. Binti
2
ORCID: ORCID
Y. Nurfina
3

  1. Universiti Malaysia Perlis (UniMAP), Faculty of Chemical Engineering & Technology, 02600 Jejawi, Perlis, Malaysia
  2. Universiti Malaysia Perlis (UniMAP), Centre of Excellence Geopolymer and Green Technology (CEG eoGT ech), 02600 Jejawi, Perlis, Malaysia
  3. Research Center for Photonics, National Research and Innovation Agency, Kawasan Puspiptek Gd. 442 Tangerang Selatan, Indonesia, 15314

Abstrakt

Using friction-assisted solid-state processes in the surface engineering of metals and alloys addresses the challenges involved in liquid-state methods. In the present work, friction surface alloying (FSA) was used to deposit Al-Zn alloy coating as a layer on pure Al substrate. Zn powder was filled in the holes produced longitudinally in a pure Al rod and was used as the consumable rod. Processing was done at 1100 rpm with 25 mm/min feed rate at a worktable vertical feed of 5 mm/min. Due to the generated heat during the friction surfacing, the zinc reinforcement was melted and a solid solution alloy of Al-Zn was produced on pure Al. The cross-sectional microstructure clearly indicated a strong metallurgical bonding at the alloy-substrate interface. Phase analysis carried out by X-ray diffraction studies confirms the developed Al-Zn alloy in the coated surface. Hardness measurements at the cross-section and at the surface demonstrated improvement (75.2±8.3 HV0.1) compared with the substrate (36.5±7.1 HV0.1) due to the formation of the alloy. Corrosion experiments by polarization studies revealed significant improvement in the corrosion resistance for the produced surface alloy as reflected from the lower corrosion current density (1.39×10–4 A/cm2) compared with the substrate (1.83×10–3 A/cm2). Higher tensile strength (245.5±5.2 MPa) was measured for the developed alloy than the substrate (182.1±6.9 MPa) without losing the ductility significantly. The results demonstrate the potential of FSA to develop surface alloys within the solid-state itself.
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Autorzy i Afiliacje

Ratna Sunil Buradagunta
1
ORCID: ORCID
Ambuj Sharma
2
ORCID: ORCID
Tapan K. Mahanta
3
ORCID: ORCID
Shaik Feroz
1
ORCID: ORCID
Ravikumar Dumpala
4
ORCID: ORCID

  1. Prince Mohammad Bin Fahd University, Department of Mechanical Engineering, Al-Khobar 31952, Saudi Arabia
  2. School of Mechanical Engineering, VIT-AP University, Amaravati, Andhra Pradesh, India-522237
  3. VIT University, School of Mechanical Engineering, Chennai-600127, India
  4. Visvesvaraya National Institute of Technology, Department of Mechanical Engineering, Nagpur 440010, India

Abstrakt

The current paper demonstrates friction-assisted surface alloying to produce Mg-Sn-Pb alloy within the solid state by using friction stir processing (FSP) principle. A groove is machined on the surface of pure magnesium sheet and a thin wire of Sn-Pb was inserted into the groove and then FSP was carried out on the surface. In order to achieve uniformity in the alloy formation, second pass was also carried out on the stirred region. Development of Mg-Sn-Pb alloy was observed at the surface as reflected from the corresponding X-ray diffraction peaks. Surface micro-hardness of the produced surface Mg-Sn-Pb alloy was significantly increased than pure Mg. Corrosion behavior was assessed by polarization tests and the result indicated higher corrosion resistance for the produced alloy due to the developed solid solution grains. Both the first-pass and second-pass samples have exhibited similar levels of corrosion resistance. Higher tensile strength (148.7 ± 5.1 MPa) was observed for the produced surface alloy and second-pass marginally elevated the tensile strength (152.1 ± 3.8 MPa) compared with Mg (106.2 ± 4.2 MPa). Higher ductility was also observed as reflected from the increased % of elongation (7.4 ± 0.8 and 8.2 ± 1.1) for the produced alloys compared with Mg (4.3 ± 0.7). The present work demonstrates the potential of friction surface alloying to develop Mg-Sn-Pb alloy without melting the base material that exhibits improved corrosion and tensile properties. Furthermore, it is also concluded that the second pass marginally increases the corrosion and mechanical performance of the alloy.
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Autorzy i Afiliacje

Ratna Sunil Buradagunta
1
ORCID: ORCID
B. Venkateswarlu
2
ORCID: ORCID
Ambuj Sharma
3
ORCID: ORCID
Feroz Shaik
1
ORCID: ORCID
Ravikumar Dumpala
4
ORCID: ORCID

  1. Prince Mohammad Bin Fahd University, Department of Mechanical Engineering, Al-Khobar 31952, Saudi Arabia
  2. Rajiv Gandhi University of Knowledge Technologies (AP-IIIT), Department of Metallurgical and Materials Engineering, Nuzvid 521101, India
  3. School of Mechanical Engineering,VIT-AP University, Amaravati 522237, Andhra Pradesh, India
  4. Visvesvaraya National Institute of Technology, Department of Mechanical Engineering,Nagpur 440010, India

Abstrakt

In the current work, the surface of AA6061-T6 alloy has been modified by friction stir processing (FSP) to assess microstructural development and mechanical behaviour. The grooves were made on the surface of the base alloy to deposit the reinforcements (Al2O3 + rGO), and (hBN + rGO) thus one pass was made with the probeless tool to pack the reinforcements into the groove, and 2 more passes in the same direction to compactly fabricate the FSPed composites. The fabricated specimens showed a decreased grain size along with the uniformly dispersed reinforcements in the stir zone (SZ) which can be observed in the microstructural studies. Furthermore, the altered intensity of the significant X-ray Diffraction (XRD) peaks was observed in the FSPed composites which indicates the reinforced elements as evidence of the uniform dispersion. In comparison of the reinforced elements, the Al2O3 + rGO hybrid reinforcement showcased better results of electrical conductivity and thermal conductivity than the hBN + rGO hybrid reinforcement but a slight reduction when compared to the base alloy AA6061-T6. Increased microhardness of 14.86% and tensile strength of 4.39% with an increase of ductility of 8.64% for hBN + rGO hybrid reinforcement was observed when compared to the Al2O3 + rGO hybrid reinforcement. The impact test was conducted for all the surface composites revealed a significant increase of 8.3% in load absorbing capacity with the hybrid reinforcements hBN + rGO compared to the Al2O3 + rGO reinforcement. These results suggest the promising role of modifying base alloy with surface reinforcements via FSP to improve the material performance.
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Autorzy i Afiliacje

A. Sharma
1
ORCID: ORCID
S.Ch. Kundurti
1
ORCID: ORCID
R.S. Buradagunta
2
ORCID: ORCID
S. Singh
3
ORCID: ORCID
P. Tambe
1
ORCID: ORCID

  1. School of Mechanical Engineering, VIT-AP University, Amaravati, Andhra Pradesh, India-522237
  2. Department of Mechanical Engineering, College of Engineering, Prince Mohammad Bin Fahd University, Al Khobar 31952, Saudi Arabia
  3. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China

Abstrakt

study explores the role of process parameters in joining IN718 with the TLP bonding process is explored. Microstructure evolution and mechanical performance of the bond are investigated using scanning electron microscopy, tensile test, and micro-hardness test. The bond metallurgy showed three distinct zones: the base material zone, the diffusion-affected zone containing a large number of boride precipitates, and the isothermal solidification zone. Further investigation reveals that the ISZ contains a few brittle intermetallic particles, which reduce the mechanical properties of the bond. The results demonstrates that higher bonding temperature, time, optimal interlayer thickness, and pressure enhance the mechanical and microstructural properties of the bond. The bond formed at 1423 K bonding temperature, 1.5 h holding time, 80 μm interlayer thickness, and 12.5 kg load demonstrates the highest strength of 625 MPa.
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Autorzy i Afiliacje

U.K. Tarai
1
ORCID: ORCID
S. Dwibedi
2
ORCID: ORCID
D.R. Biswal
1
ORCID: ORCID
A.R. Biswal
1
ORCID: ORCID
Madhab Behera
1
ORCID: ORCID
Suyog Jhavar
2
ORCID: ORCID

  1. DRIEMS University, Department of Mechanical Engineering, Cuttack 754022, India
  2. Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Assam 781039, India

Abstrakt

Inconel-800 is often used across different industries because of its unique properties, especially its ability to withstand very high temperatures. However, machining Inconel-800 can be quite challenging to conventional machining processes due to its distinctive properties. This paper reports the comparative evaluation of electric discharge machining and powder-mixed electrical discharge machining for machining Inconel-800 using a graphite electrode. FERROLAC 3M EDM Oil and boron carbide powder particles mixed with FERROLAC 3M EDM Oil were used as dielectric for electrical discharge machining and powder-mixed electrical discharge machining, respectively. Similar specifications of work specimens and machining combinations were used for conducting experiments by electric discharge machining and powder-mixed electrical discharge machining. Peak current ‘IP’, pulse-on-time ‘Ton, and pulse-off-time ‘Toff’ were chosen as variable parameters for conducting experiments according to Taguchi L9 (33), and each experimental run was used for EDM and PMEDM for machining of Inconel-800 to perform the comparative evaluation in terms of material removal rate and tool wear rate. The research findings of this study showed that, in comparison to the electric discharge machining process, the powder-mixed electrical discharge machining process significantly increases the material removal rate and decreases the tool wear rate. The results of this study were further confirmed by confirmation tests. A scanning electron microscope and energy dispersive spectrograph were used to analyze the microstructural analysis and elemental composition of the work specimens.
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Autorzy i Afiliacje

Satish Kumar
1
Sujeet Kumar Chaubey
2
Harvinder Singh
1
Suyog Jhavar
3
ORCID: ORCID

  1. Department of Mechanical Engineering, Chandigarh Engineering College-CGC, Landran, Mohali-140307, Punjab, India
  2. Marwadi University Research Center, Department of Mechanical Engineering, Marwadi University, Rajkot-360 003, Gujarat-India
  3. School of Mechanical Engineering, VIT-AP University, Vijayawada-522241, Andhra Pradesh-India

Abstrakt

Wire Arc Additive Manufacturing (WAAM) is an emerging technology in the manufacturing sector, offering benefits such as increased production rates and cost efficiency. This study investigates the WAAM of aluminium alloy 5356, deposited on aluminium 6082 base plates. Key process parameters – arc current, stick-out distance, and travel speed – were optimized using an L9 orthogonal array to improve the quality of multi-wall structures. The optimized parameters facilitated the construction of multi-wall structures using a zig-zag pattern. Microstructural and mechanical properties were analyzed using scanning electron microscopy, tensile testing, and Vickers hardness testing. The results revealed significant differences in grain structure, with coarse grains in the top region and finer grains in the bottom, influenced by varying solidification rates. Additionally, the optimized parameters reduced the occurrence of cracks and pores.
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Autorzy i Afiliacje

K. Saravanakumar
1
ORCID: ORCID
J. Nampoothiri
1
ORCID: ORCID
M.R. Prat heesh Kumar
1
ORCID: ORCID

  1. Department of Production Engineering, PSG College of Technology, Coimbatore, Tamil Nadu 641 004, India

Abstrakt

Composite materials offer a versatile and customizable solution for various industries, allowing for innovative designs and

improved performance. Magnesium-based composites offer a compelling combination of lightweight, high strength, and other desirable

properties, making them valuable materials for a variety of applications. The present study is focused on the microstructural,

mechanical and wear characterization of the magnesium based hybrid composites which are developed with different combinations

of Al2O3 and B4C microparticulates through stir casting route. The microstructural study reveals the diversity in the particle phase

distribution. Composite with 2% Al2O3 and 6% B4C have shown higher hardness (78.5 HV0.2 and 67.3 HV0.2, respectively) and

yield strength (273 MPa and 219 MPa, respectively) as compared to the other compositions. Furthermore, pin on disc test was

conducted on the developed composites to study the wear and friction behavior. Test results revealed that the composite with 2%

Al2O3 and 6% B4C has better wear resistance due to its superior mechanical properties as compared to the other developed composites.

The results demonstrated the positive role of reinforcements in the AZ91D alloy, which can be a promising material for

manufacturing structures and components in the automotive sector.

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Autorzy i Afiliacje

Y. Narendra Babu
1
ORCID: ORCID
D. Vijay Praveen
1
ORCID: ORCID
P. Umamaheswarrao
1
ORCID: ORCID
B. Ratna Sunil
2
ORCID: ORCID
S. Krugon
1
ORCID: ORCID

  1. Department of Mechanical Engineering, Bapatla Engineering College, Bapatla 522101, Andhra Pradesh, India
  2. Prince Mohammad Bin Fahd University, Department of Mechanical Engineering, Al-Khobar 31952, Saudi Arabia

Abstrakt

In aluminium extrusion, porthole dies are extensively used for hollow profiles production. In this work, a porthole die with three portholes around the die centre was used to produce Aluminium Magnesium Silicon based AA6063 alloy profile. Press trials were conducted using horizontal type extrusion press of capacity 690 Ton under different ram speeds i.e. 2, 4.5 and 6 mm/s for producing profiles. Subsequently, the profiles produced were aged at 175°C for 6 hours and microstructures were observed. Further, samples drawn from extruded profiles were tested for tensile properties and hardness. X-ray diffraction (XRD) analysis was carried out for identification of phases. Further, the profiles produced were evaluated for weld strength integrity using wedge expansion test. Results indicated that grain refinement has occurred while extruding the samples from billet with initial grain size of 67 μm to profiles. Also, compression load in wedge expansion test was recorded for profiles produced at a ram speed of 2 mm/s with 22.74 ± 0.92 kN with decreasing trend of compression load for profiles extruded at 4.5 mm/s and 6 mm/s, which indicated that lower ram speed produces profiles with high weld strength integrity.
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Autorzy i Afiliacje

V.N.S.U. Viswanat h Ammu
1 2
ORCID: ORCID
P.M. Padole
1
ORCID: ORCID
A. Agnihotri
2
ORCID: ORCID
Ravikumar Dumpala
1
ORCID: ORCID

  1. Department of Mechanical Engineering, Visvesvaraya National Institute of Technology, Nagpur 440010, India
  2. Jawaharlal Nehru Aluminium Research Development and Design Centre, Ministry of Mines, Government of India, Amravati Road, Wadi, Nagpur 440023, India

Abstrakt

Magnesium (Mg) alloys have become an attractive choice for lightweight structural applications. However, improving the tribological characteristics of Mg alloys is essential to widen the range of applications. In the present work, ball burnishing was performed with different burnishing loads from 40 N to 80 N to investigate its effect on surface roughness, microhardness, and wear resistance. It was found that the 50 N burnishing load exhibits the best surface finish with a reduction of 46.2% in surface roughness compared to unburnished alloy. The highest microhardness was observed at 60 N load with an improvement of ~35.5%. Higher loads beyond 50 N resulted in increased surface roughness. Higher burnishing load caused surface distortion and flaking which decreased the microhardness beyond 60 N load. At 50 N burnishing load, better wear resistance with a reduction of ~40% was achieved compared to unburnished alloy. Improvement in surface finish and microhardness are responsible for better wear resistance. Worn surfaces exhibited abrasion, oxidation, and delamination wear mechanisms in the unburnished sample. Whereas, delamination wear was absent in the burnished specimen at 50 N burnishing load.
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Autorzy i Afiliacje

S.K. Baral
1
ORCID: ORCID
M.M. Thawre
2
ORCID: ORCID
B.R. Sunil
3
ORCID: ORCID
Ravikumar Dumpala
1
ORCID: ORCID

  1. Department of Mechanical Engineering, Visvesvaraya National Institute of Technology, Nagpur 440010, India
  2. Department of Metallurgical and Materials Engineering, Visvesvaraya National Institute of Technology, Nagpur 440010, India
  3. Department of Mechanical Engineering, College of Engineering, Prince Mohammad Bin Fahd University, Al-Khobar 31952, Saudi Arabia

Abstrakt

The suspension system of an automobile contributes to its performance and comfort, and its malfunction could lead to an accident. Researchers have extensively studied the durability criteria of these components at room temperature, and a wealth of data is available. The vehicle may be subjected to temperature extremes ranging from 45°C or higher in the desert to –40°C or lower in the Arctic. Subzero temperatures have a significant impact on automobile components and are a serious concern for the automotive industry. The steel alloys used in the manufacturing of automobile components experience ductile to brittle transition (DBT) under such temperature conditions during service loading. The quasi-static and cyclic testing was carried out on stabilizer bars and leaf spring specimens at subzero temperatures to understand the behaviour of automotive materials. The quasi-static strength of the stabilizer bars and leaf springs has been augmented by 21.62% and 55.18%, respectively, at a subzero temperature of –40°C in comparison to room temperature. The fatigue life of leaf springs was improved by 29, 27, and 30% in the number of cycles at higher, medium, and low fatigue loading, respectively. Stabilizer bars were regarded as infinite at all fatigue loadings in subzero temperatures of –40°C. This study investigates the failure characteristics of steels used in automobile stabilizer bars and leaf springs at sub-zero temperatures under quasi-static and cyclic loading conditions. The quasi-static and cyclic fractographic characterizations correlate the mechanical behaviour with the fracture features and mechanisms. This research is critical for the design and development of automotive components under sub-zero temperature conditions in a durable manner.
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Autorzy i Afiliacje

A. Bhanage
1
ORCID: ORCID
R. Bhortake
1
ORCID: ORCID
N. Satonkar
1
ORCID: ORCID
N. Dhobale
1
ORCID: ORCID

  1. Marathwada Mitra Mandal’s Institute of Technology, Lohgaon, Pune, Maharashtra, India

Abstrakt

Thermoplastic starch (TPS) is a biopolymer that has gained recognition as a substitution for petroleum-based plastic. TPS combined with other material manufacturing processes through melt mixing necessitates high temperatures that can impact the product’s degrading qualities. Hence, Aloe vera (AV) gel is added as a cross-linker for the process. This paper focuses on investigating the rheological properties of TPS film based on potato-soluble starch upon the addition of AV gel. Melt mixing and hot-press processes were used to create the films. The melt and dynamic rheology of the material were all measured. The result shows that the melt flow index of the TPS/AV films is reduced with the increase in the AV gel content. The formation of crosslinking between TPS and AV prevents polymer chains from sliding past each other contributing to an increase in the viscosity and reduction in shear rate. A higher value of storage modulus than loss modulus proved that the TPS/AV films behaved more like a solid than a liquid. The complex viscosity of the films decreases as the frequency increases which is caused by the shear-thinning effect. Thus, crosslinked TPS/ AV films with well-understood rheological properties could be suitable for various packaging applications due to their mechanical strength, barrier properties, and potentially biodegradable nature.
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Autorzy i Afiliacje

J. Bin Jaapar
1
S.F.A. Karim
1 2
ORCID: ORCID
N.F.A. Sailan
1
M.U.H. Suzihaque
1 2
ORCID: ORCID
H. Alwi
1 2
ORCID: ORCID
U.K. Ibrahim
1 2
ORCID: ORCID
N.A. Md Zaki
1 2
ORCID: ORCID
N.K. Anuar
2 3
ORCID: ORCID

  1. College of Engineering, School of Chemical Engineering, Universiti Teknologi MARA, 40450, Selangor, Malaysia
  2. Universiti Teknologi MARA, Food Process and Engineering Research Group (FOPERG), 40450, Selangor, Malaysia
  3. Universiti Teknologi MARA, Faculty of Pharmacy, Puncak Alam Campus, FF1, Level 11, Bandar Puncak Alam, 42300 Puncak Alam, Selangor, Malaysia

Abstrakt

This review paper investigates the corrosion characteristics of geopolymer concrete, which is considered a sustainable and environmentally friendly substitute for conventional concrete made with Portland cement. This study aims to consolidate the current understanding of corrosion mechanisms, the various factors contributing to corrosion, strategies for preventing corrosion, and the latest developments in this field. Geopolymer concrete has garnered considerable attention owing to its capacity to mitigate environmental impact and enhance the durability of concrete structures. A comprehensive understanding of a material’s vulnerability to corrosion is paramount to guaranteeing its sustained effectiveness over extended periods in diverse environmental conditions. Insights into the mechanisms of corrosion initiation and progression in geopolymer concrete have been derived from critical findings from experimental and theoretical studies. This paper examines the mechanisms of electrochemical corrosion, the characteristics of pore structure, permeability, and chemical composition, and the various factors that influence corrosion, such as environmental exposure and microstructural characteristics. This paper examines various methods for assessing corrosion, including electrochemical techniques, non-destructive testing, and microstructural analysis.

Additionally, preventive measures such as material selection, coatings, sealants, cathodic protection, and inhibitors are discussed. Geopolymer concrete’s performance and challenges are exemplified through real-world case studies. The review provides a comprehensive summary of significant findings, implications, and areas for further research. It is a valuable resource fo
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Autorzy i Afiliacje

A. Wiratma
1
ORCID: ORCID
M.M. Al Bakri Abdullah
1 2
ORCID: ORCID
M.S.I. Ibrahim
3
ORCID: ORCID
T. Stachowiak
4
ORCID: ORCID
P. Vizureanu
5
ORCID: ORCID
F.F. Zainal
1
ORCID: ORCID
A. Romisuhani
2
ORCID: ORCID

  1. Universiti Malaysia Perlis (UniMAP), Faculty of Chemical Engineering & Technology, Kangar 02600, Malaysia
  2. Universiti Malaysia Perlis (UniMAP), Center of Excellence Geopoly mer and Green Technology (CEGeoGTech), 02600, Arau, Perlis, Malaysia
  3. Universiti Malaya , Faculty of Engineering, Department of Civil Engineering, Kuala Lumpur 50603, Malaysia
  4. Częstochowa University of Technology, Department of Technology and Automation, Armii Krajowej 19c av., 42-200 Częstochowa
  5. “Gheorghe Asachi” Technical University of Iasi, Faculty of Materials Science and Engineering, Department of Technologies and Equipment for Materials Processing, 700050 Iasi, Romania

Abstrakt

This study investigates the potential of metakaolin-based alkali-activated materials (AAM) as efficient adsorbents for copper removal through adsorption. The optimization process involved comparing the synthesis of AAM using metakaolin as the precursor material under two conditions: one with adding foaming agents, specifically hydrogen peroxide with a surfactant, and the other without any foaming agent. Characterization techniques, including specific surface area (BET), X-ray diffraction (XRD), and scanning electron microscopy (SEM), were employed to analyze the structural and morphological changes of the synthesized AAM. Batch adsorption experiments were conducted to evaluate the copper removal efficiency of the optimized AAM by considering factors such as initial copper concentration and pH. The Langmuir and Freundlich isotherm models were employed to investigate the adsorption mechanism and equilibrium behavior, providing insights into the adsorption process. The results demonstrated that the optimal AAM exhibited superior copper adsorption performance, achieving a removal efficiency of over 90% and best fitted with Langmuir isotherm suggesting that copper ions perform as a single molecule layer for MK-based AAM adsorption. This study contributes to the development of sustainable and effective materials for water treatment, particularly for addressing copper contamination. Metakaolin-based AAM with 1.00 wt.% hydrogen peroxide indicated the availability of numerous active sites for binding with Cu2+ and showed promise as a high-effective, convenient, and eco-friendly adsorbent for copper removal, with potential applications in various industrial and environmental settings.
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Autorzy i Afiliacje

M. Ibrahim
1 2
ORCID: ORCID
W.M.W. Ibrahim
2 3
ORCID: ORCID
M.M. Al Bakri Abdullah
1 2
ORCID: ORCID
A. Romisuhani
2
ORCID: ORCID
P. Postawa
4
ORCID: ORCID
S. Ishak
5
ORCID: ORCID
R. Ediati
6
ORCID: ORCID

  1. Universiti Malaysia Perlis (UniMAP), Faculty of Chemical Engineering & Technology, 02600, Arau, Perlis, Malaysia
  2. Universiti Malaysia Perlis (UniMAP), Center of Excellence Geopolymer and Green Technology (CEGeoGTECH), 01000, Perlis, Malaysia
  3. Universiti Malaysia Perlis (UniMAP), Faculty of Mechanical Engineering & Technology, 02600, Arau, Perlis, Malaysia
  4. Częstochowa University of Technology, Department of Technology and Automation, 19c Armii Krajowej Av., 42-200 Częstochowa, Poland
  5. Universiti Teknologi Malaysia, Faculty of Civil Engineering, Institute for Smart Infrastructure and Innovative Construction, 81310 Johor, Malaysia
  6. Department of Chemistry, Institut Teknologi Sepuluh Nopember, Surabaya 60115, Indonesia

Abstrakt

Correct production of aluminium profiles requires optimising many parameters on the production line. Irregularities in the process cause, among others, unfavourable changes in the surface geometry structure (SGP) of the profile, including roughness. Therefore, assessing surface roughness makes it possible to identify abnormalities in the production process. An original vision system was proposed to analyse changes in the profile surface roughness during the extrusion process. The constructed system, placed on the production line, consists of a monochromatic camera and prototype illumination that enable recording profiles of various shapes. The system allows for quick detection of changes in the quality of the profile surface based on the analysis of reflected light distribution. The work presents, among others, a comparison of vision measurement results obtained during extrusion with the process parameters recorded on the production line.
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Autorzy i Afiliacje

C. Jasiński
1
ORCID: ORCID
Ł. Morawiński
1
ORCID: ORCID
A. Kochański
1
ORCID: ORCID

  1. Warsaw University of Technology, Facu lty of Mechanical and Industrial Engineering, Narbutta St. 85, 02-524 Warsaw, Poland

Instrukcja dla autorów

Archives of Metallurgy and Materials is a quarterly journal of Polish Academy of Sciences and Institute of Metallurgy and Materials Science PAS, which has published continuously since 1954, scientific papers in English in the following fields: metallurgy and materials science, foundry, mechanical working of metals, thermal engineering in metallurgy, thermodynamic and physical properties of materials, phase equilibria in the broad context and diffusion.

In addition to the regular, original scientific papers and conference proceedings, invited reviews presenting the up-to-date knowledge and monothematic issues devoted to preferred areas of research will be published. Submission of a paper implies that it has not been published previously, that it is not under consideration for publication elsewhere, and that if accepted it will not be published elsewhere in the same form.

When preparing the manuscript, please pay attention to the following rules:

1. Manuscript submission

1.1. Electronic submission: All submissions must be made electronically via Editorial System https://www.editorialsystem.com/editor/amm/articles/list/?qt=NEW

1.2. Manuscript should not exceed 12 pages of full-size paper (A4), must be double spaced (please use 12 point font), with generous margins, and the pages must be numbered. Authors should submit an electronic file of their manuscript in Microsoft Word format (minimum: version 2000).

1.3. All manuscripts must be written in good English. Both British and U.S. English are acceptable but Authors should be consistent in their usage. It is sole responsibility of the Authors to make sure that the manuscript is grammatically correct and spell checked. Authors are strongly encouraged to have the manuscript proofread by a native speaker of English or a language professional, before it is submitted to the editorial office. Papers written in poor English will be automatically rejected without being subjected to review.

1.4. Authors should submit an electronic copy of final version of their paper in Microsoft Word format, schemes (sketches) and figures saved as .eps, .jpeg, or .tiff.

1.5. Articles submitted for publication should include abstract and maximum 5 key words.

1.6. Please adhere to the following order of presentation:

Author(s) with first names in full.

Affiliation(s): in a short form (Institution, City, Country). Use the superscripts (*, **, . . .) after the Authors’ names in case of different affiliations.

Title: All words in lower case (first letter of first word capitalized).

Abstract: maximum 10 lines, including primary objective, research design, methods and procedures, main outcomes and results, conclusions. Do not use abbreviations in the abstract.

Keywords: 5 maximum.

Main text: Begin on the second page with Introduction, followed by Experimental (Materials and Methods) and/or Theory section, Results, Discussion, and end with Conclusion section and Acknowledgement. When appropriate the Authors may choose to combine Results section and Discussion section into one Results and discussion section. Make sure the text in sections is divided logically into paragraphs. Use the decimal system for sections, subsections and (at the most) subsubsections, as exemplified in the headings of these instructions. All abbreviations should be spelled out the first time they are introduced in text or references. Thereafter the abbreviation can be used.

Appendices

References

Correspondence address: title, name, postal address, telephone and e-mail address of the corresponding Author.

Figure captions

Tables

2. Manuscript preparation

2.1. Formulae, equations and units

Formulae and equations should be typed on separate lines and numbered consecutively in parentheses on the right side (1) . . . (n). Vectors must be indicated as such. Size of symbols should be kept uniform for all equations in the manuscript. Formulae and equations should be referred to in the text as follows: Eq. (1). Numbers and units must be separated by a space, e.g. 5.5 wt.%, 273.15 K, 1013 MPa, etc. The only exception are angle degrees, e.g. 90°.

2.2. Figures

Figures are usually printed in reduced size and this should be taken into account when preparing them. This applies also to the photographs. For the best results, make sure that lettering on illustrations is at least 2 mm high after reduction. Figure captions should be typed on a separate page at the end of manuscript. The same refers to tables and all sorts of lists. The appropriate place of tables and figures in the text should be indicated by < Tab 1 > or written in separate line. Figures should be referred to in text as follows: Fig. 1. Each figure should have its own caption explaining the content without reference to the text. Line drawings will normally be printed in column width of 85 mm. After this reduction all figures should have the same final letter size of at least 2 mm. The style of labeling of the coordinates must be uniform for all drawings. The magnification must be indicated by a labeled scale marker on the micrograph itself, not drawn below it. For optimum printing quality micrographs should be saved as .eps or .tiff at a resolution of at least 300 dpi while line drawings at a resolution of at least 600 dpi.

2.3. Tables

Tables together with captions should be typed on separate page at the end of manuscript. Tables are to be numbered consecutively using Arabic numbers in the text (TABLE 1 . . . n). The captions should explain the symbols used in the heading and in the left hand column. Tables should be referred to in the text as follows: TABLE 1.

2.4. References

A new type of literature provision has been in force since 2020 – modified vancouver style.
Please follow the instructions below.

References should be typed on separate pages and numbered consecutively applying the system accepted by the Quarterly (initials and names all authors, title of the article (obligatory), journal title [abbreviated according to the Journal Title Abbreviations of Web of Science: http://library.caltech.edu/reference/abbreviations/ everyone abbreviation should be end with a dot – example. Arch. Metall. Mater.] or book title; journal volume or book publisher; page spread; publication year in bracket, full DOI number).

Please note the correct layout punctation (commas and periods), and spaces. Please note the arrangement of dots, commas and spaces.

First, we write the initial of the name, dot, space, surname, volume must be written BOLD, at the name   of the authors, do not write a word “and” write only a comma. We give the year of publication at the end of the sentence in brackets and DOI number (full notation and linked).

The use of DOI numbers (full notation and linked) is mandatory for each paper and should be formatted as shown in the examples below:

3. Samples

Journals:

[1] L.B. Magalas, Development of High-Resolution Mechanical Spectroscopy, HRMS: Status and Perspectives. HRMS Coupled with a Laser Dilatometer. Arch. Metall. Mater. 60 (3), 2069-2076 (2015). DOI: https://doi.org/10.1515/AMM-2015-0350

[2] E. Pagounis, M.J. Szczerba, R. Chulist, M. Laufenberg, Large Magnetic Field-Induced Work output in a NiMgGa Seven-Lavered Modulated Martensite. Appl. Phys. Lett. 107, 152407 (2015). DOI: https://doi.org/10.1063/1.4933303

[3] H. Etschmaier, H. Torwesten, H. Eder, P. Hadley, Suppression of Interdiffusion in Copper/Tin thin Films. J. Mater. Eng. Perform. (2012).

DOI: https://doi.org/10.1007/s11665-011-0090-2.

Books:

[4] K.U. Kainer (Ed.), Metal Matrix Composites, Wiley-VCH, Weinheim (2006).

[5] K. Szacilowski, Infochemistry: Information Processing at the Nanoscale, Wiley (2012).

[6] L. Reimer, H. Kohl, Transmission Electron Microscopy: Physics of Image Formation, Springer, New York (2008).

Proceedings or chapter in books with editor(s):

[7] R. Major, P. Lacki, R. Kustosz, J. M. Lackner, Modelling of nanoindentation to simulate thin layer behavior, in: K. J. Kurzydłowski, B. Major, P. Zięba (Eds.), Foundation of Materials Design 2006, Research Signpost (2006).

Internet resource:

[8] https://www.nist.gov/programs-projects/crystallographic-databases, accessed: 17.04.2017

Academic thesis (PhD, MSc):

[9] T. Mitra, PhD thesis, Modeling of Burden Distribution in the Blast Furnace, Abo Akademia University, Turku/Abo, Finland (2016).

 

3. Fee

We would like to inform the Authors that from July 1, 2024, the fee is increased and will amount to 300 EUR plus 23%VAT (1250 PLN net for authors with Polish affiliation).

4. Review and proofread process

4.1. Peer review process

All submitted manuscripts are subject to review by recognized experts appointed by the Editor-in-Chief and members of the Editorial Board. Authors are requested to provide in the editorial system the names and contact details (affiliations and valid e-mail addresses) of two experts who could act as reviewers. Only one of these names may be from the same country as the affiliation of the corresponding author. The decision to appoint a reviewer is solely at the editor's discretion. When the article requires corrections, the authors are required to respond in writing to the comments of the Editor and Reviewers and to make corrections to the manuscript. The decision to reject the article is made by the Editorial Board, and the final decision is made by the Editor, who may appoint another reviewer if necessary. The reviewers remain anonymous to the authors and their identity cannot be disclosed by the Editor.

 4.2. Submission of a revised manuscript

When a manuscript revision is requested, Authors should return a revised version of their manuscript to the editorial office as soon as possible. Acting quickly can ensure rapid publication if the article is finally accepted for publication in Arch Metall Mater. If this is the first revision of the article, Authors are requested to return the revised manuscript within 14 days. If this is the second revision, Authors are requested to return the revised manuscript within 7 days.

 4.3. Final revision

 Authors will receive a pdf file via the editorial system in the PROOF tab of the proof of the article in a version that is suitable for publication. This is the last opportunity to review the article before its publication on the journal's website, Czytelnia PAN platform and WoS. No changes or modifications can be made after publication. Therefore, authors are requested to thoroughly review the manuscript and prepare a separate document containing all changes that should be introduced.

5. Original version

Starting with issue 1 / 2000, volume 45, the Archive of Metallurgy and Materials is published in electronic form on the platform Reading Room PAS  as the original version (reference). The platform  Reading Room PAS sends files to WoS within 6 weeks of publication of the full content of a given issue. The printed version is printed by the Warsaw Scientific Printing House of the PAN.

6. Prevent cases of plagiarism

Readers should be sure that the authors present the results of their work transparently, fair and honest, regardless of whether they are the direct authors, or used the help of a specialized entity (natural or legal person). To prevent cases of plagiarism,  the Editorial Office will require that the Authors disclosed the contribution of individual Authors in the creation of manuscript (with their affiliations and contributions, i.e. the information who is responsible for: research concept and design, collection and/or assembly of data, data analysis and interpretation, writing the manuscript) in the document "Ghostwriting statement paper".Funding sources (together with grant number) must also be revealed. The corresponding Author will bear the main responsibility for the manuscript. Detected cases will be exposed, including notifying the appropriate entities (institutions employing the Authors, scientific societies, associations of editors of scientific journals, etc.).

7. License type

Articles are printed in an open access and distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0, https://creativecommons.org/licenses/by-nc/4.0/deed.enThis license allows others to distribute, remix, modify and build upon the author's work, even commercially, as long as the author of the original work is attributed to him.

Submission of an article to the journal is unequivocal to expressing consent to the publication in both paper and electronic form.

 

 

 

Dodatkowe informacje

Archives of Metallurgy and Materials is covered by the following services:


Arianta, Baidu Scholar, BazTech, Celdes, Chemical Abstracts Service (CAS) - CAplus, Clarivate Analytics (formerly Thomson Reuters) - Current Contents/Engineering, Computing, and Technology, Clarivate Analytics (formerly Thomson Reuters) - Journal Citation Reports/Science Edition, Clarivate Analytics (formerly Thomson Reuters) - Materials Science Citation Index, Clarivate Analytics (formerly Thomson Reuters) - Science Citation Index Expanded, CNKI Scholar (China National Knowledge Infrastructure), CNPIEC, DOAJ (Directory of Open Access Journals), EBSCO (relevant databases), EBSCO Discovery Service, Elsevier - SCOPUS, Genamics JournalSeek, Google Scholar, Index Copernicus, J-Gate, JournalTOCs, KESLI-NDSL (Korean National Discovery for Science Leaders), Microsoft Academic, Naviga (Softweco), Primo Central (ExLibris), ProQuest (relevant databases), ReadCube, ResearchGate, SCImago (SJR), Sherpa/RoMEO, Summon (Serials Solutions/ProQuest), TDNet, TEMA Technik und Management, Ulrich's Periodicals Directory/ulrichsweb, WanFang Data, WorldCat (OCLC)

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