Influence of cerium on solidification microstructure of M2 high speed steel

被引:0
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作者
Li, Yan-Jun [1 ]
Jiang, Qi-Chuan [1 ]
Zhao, Yu-Guang [1 ]
He, Zhen-Ming [1 ]
Zhong, Xue-You [1 ]
机构
[1] Coll. of Mat. Sci. and Eng., Univ. of Sci. and Technol. Beijing, Beijing 100083, China
关键词
Cerium - Eutectics - Microstructure - Rare earths - Solidification;
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摘要
The influence of Ce on the solidification microstructures of M2 high speed steel was studied. The results show that Ce has the effect of alleviating the segregation of alloying elements such as W and Mo in high speed steel. With the addition of Ce, the amount of eutectic carbides is decreased and the flakes of the carbides are refined. Ce mainly segregates onto the interface between eutectic carbide and austenite, and a part of Ce enters M2C carbide. Ce can also enhance the breaking and spheroidizing of the net-work eutectic carbides during high temperature heat treatment.
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页码:132 / 135
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