采用Gleeble-1500D型热模拟试验机对Cr9Mo高合金钢进行热压缩变形,研究了该钢在温度1 173~1 473 K和应变速率10-3~1 s-1条件下的热塑性变形行为;并基于经典的应力-位错关系和动态再结晶动力学理论,分别建立了Cr9Mo钢的加工硬化-动态回复和动态再结晶两阶段的流变应力本构方程.结果表明:所建立的两个阶段的流变应力本构方程与试验曲线吻合较好,可以用该方程来预测Cr9Mo钢的高温流变行为.

所属栏目

试验研究国家“973”计划资助项目(2006CB705401)

收稿日期

2008/9/42009/6/20

作者单位

周滨:上海交通大学模具CAD国家工程研究中心, 上海 200030
申昱:上海交通大学模具CAD国家工程研究中心, 上海 200030
陈军:上海交通大学模具CAD国家工程研究中心, 上海 200030
崔振山:上海交通大学模具CAD国家工程研究中心, 上海 200030

备注

周滨(1980-),男,河南洛阳人,博士研究生.

引用该论文:

ZHOU Bin,SHEN Yu,CHEN Jun,CUI Zhen-shan.Thermal Flow Stress Constitutive Equation of Cr9Mo High-alloy Steel[J].Materials for mechancial engineering,2009,33(9):17～20
周滨,申昱,陈军,崔振山.Cr9Mo高合金钢的热流变应力本构方程[J].机械工程材料,2009,33(9):17～20

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