@ARTICLE{Wi_Dong-Yeol_Microstructure_2019,
 author={Wi, Dong-Yeol and Kim, Young-Kyun and Yoon, Tae-Sik and Lee, Kee-Ahn},
 volume={vol. 64},
 number={No 2},
 journal={Archives of Metallurgy and Materials},
 pages={525-530},
 howpublished={online},
 year={2019},
 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={This study investigated the microstructure and high temperature oxidation properties of Fe-25Cr-20Ni-1.5Nb, HK30 alloy manufactured by metal injection molding (MIM) process. The powder used in MIM had a bi-modal size distribution of 0.11 and 9.19 μm and had a spherical shape. The initial powder consisted of γ-Fe and Cr23C6 phases. Microstructural observation of the manufactured (MIMed) HK30 alloy confirmed Cr23C6 along the grain boundary of the γ-Fe matrix, and NbC was distributed evenly on the grain boundary and in the grain. After a 24-hour high temperature oxidation test at air atmospheres of 1000, 1100 and 1200°C, the oxidation weight measured 0.72, 1.11 and 2.29 mg/cm,2 respectively. Cross-sectional observation of the oxidation specimen identified a dense Cr2O3 oxide layer at 1000°C condition, and the thickness of the oxide layer increased as the oxidation temperature increased. At 1100°C and 1200°C oxidation temperatures, Fe-rich oxide was also formed on the dense Cr2O3 oxide layer. Based on the above findings, this study identified the high-temperature oxidation mechanism of HK30 alloy manufactured by MIM.},
 type={Artykuły / Articles},
 title={Microstructure and High Temperature Oxidation Properties of FE-CR-NI HK30 Alloy Manufactured by Metal Injection Molding},
 URL={http://ochroma.man.poznan.pl/Content/111311/PDF/AMM-2019-2-14-KA%20Lee.pdf},
 doi={10.24425/amm.2019.127571},
 keywords={Metal injection molding, HK30, Microstructure, High temperature oxidation},
}