@ARTICLE{Huang_Kuo-Tsung_Microstructure_2020,
 author={Huang, Kuo-Tsung and Chang, Shih-Hsien and Chuang, Chan-Yu},
 volume={vol. 65},
 number={No 2},
 journal={Archives of Metallurgy and Materials},
 pages={555-563},
 howpublished={online},
 year={2020},
 publisher={Institute of Metallurgy and Materials Science of Polish Academy of Sciences},
 publisher={Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences},
 abstract={In this study, different amounts of tantalum carbide (TaC) powders (5, 10 and 15 wt.%) are added to Vanadis 4 Extra steel powders. The composite powders are sintered at 1260, 1280, 1300, 1320, 1340 and 1360°C for 1 h, respectively. The experimental results showed that good mechanical properties (hardness 79.7 HRA, TRS 2246 MPa) were obtained by the addition of 10% TaC sintered at 1320°C for 1 h. Furthermore, the optimal sintered V4ES/TaC (Vanadis 4 Extra steel / TaC) composites after sub-zero treatment possess the highest hardness (80.9 HRA) and transverse rupture strength (TRS) values (2445 MPa), as well as a better polarization resistance (658.99 Ω·cm2). After sub-zero treatment, the VC carbides decompose and re-precipitate refined VC carbides within the grains (VC carbides are formed in steel powder); moreover, the TaC particles are still uniformly distributed around the grain boundaries, which results in dispersion strengthening and precipitation hardening. The results clearly reveal that sub-zero heat treatment effectively improves the microstructure and strengthens the V4ES/TaC composite.},
 type={Article},
 title={Microstructure and Properties of Composite Produced by Vacuum Sintering of Vanadis 4 Extra Steel Powder with Tantalum Carbides and Following Heat Treatment},
 URL={http://ochroma.man.poznan.pl/Content/116030/PDF/AMM-2020-2-07-Chang.pdf},
 doi={10.24425/amm.2020.132793},
 keywords={Tantalum carbide, Vanadis 4 Extra steel, transverse rupture strength, polarization resistance, sub-zero heat treatment},
}