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碳化物形态及回火时间对Cr12MoV钢热处理畸变的影响

Zhitao Huang,Wenhuai Tian,Chuhua Li,Jianping Wang,Hongbo Suo

Heat Treatment of Metals（2016）

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Abstract
利用Gleeble-1500热模拟试验机对热处理过程中Cr12MoV模具钢的残余应变进行了测量,分析了碳化物组织均匀性与回火时间对热处理畸变的影响,并对Cr12MoV模具钢热处理过程中的畸变规律进行了探讨.研究结果表明:Cr12MoV钢淬火后,在垂直于轧制方向上尺寸有所减小;碳化物组织越均匀,热处理畸变越小;随回火时间延长,沿垂直于轧制方向畸变量减小.高温回火后硬度明显下降,随回火时间增长,产生二次硬化现象.
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