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| Effect of Heat Treatment Process on Microstructure and Mechanical Properties of Cr8Mo2VSi and D2 Cold Work Steel |
| MA Dangshen1，LIU Jianhua1，CHEN Zaizhi1，KANG Aijun2，CHI Hongxiao1 |
| 1. Central Iron and Steel Research Institute， Beijing 100081, China；2. Dongbei Special Steel Co., Ltd., Fushun 113001, Liaoning, China |
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Abstract The effect of heat treatment on the microstructure and mechanical properties of Cr8Mo2VSi and D2 cold work steels were investigated.The results show that carbides in Cr8Mo2VSi were more finer and distributed uniformly than in D2 steel.After heating at 10201040 ℃ then quenching in oil,Cr8Mo2VSi had lower hardness than that of D2 steel, but after tempering at higher temperature, secondary hardening of Cr8Mo2VSi was more obvious and Cr8Mo2VSi by 12HRC was harder than D2 steel, furthermore Cr8Mo2VSi had better combination of toughness and strength than D2.
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Received: 01 January 1900
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2008, Vol. 43 
