Journal of Korea Foundry Society (한국주조공학회지)
- Volume 16 Issue 2
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- Pages.141-148
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- 1996
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- 1598-706X(pISSN)
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- 2288-8381(eISSN)
Effects of Mo on the Microstructure and Hardness in High Chromium Cast Irons
Mo가 고크롬주철의 조직 및 경도에 미치는 영향
- Yu, Sung-Kon (Dept. of Materials Engineering, Keimyung University)
- 류성곤 (계명대학교 재료공학과)
- Published : 1996.04.20
Abstract
In high chromium cast iron, the control of matrix microstructure as well as carbide structure is important to the performance as a wear resistant material. In this study, 3.0% C-24.0% Cr white cast irons with various molybdenum contents(residual, 1.0%, 3.0% and 5.0%) were solidified conventionally and unidirectionally for studying their effects on the microstructure and hardness. In the conventional casting, two sets of castings were poured from each melt. One set of the castings consisted of cylindrical bars of 10 and 20mm by 155mm long. The second set of the castings was a cylindrical bar of 30mm by 200mm long. On the other hand, a pep-set mold set on the Cu plate was employed to make the solidification unidirectionally. X-ray diffraction method was used to observe retained austenite and carbides in the high chromium cast iron. The morphology of eutectic
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