| Cr9Mo高合金钢的热流变应力本构方程 |
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| 引用本文： | 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(9). |
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| 作者姓名： | 周滨 申昱 陈军 崔振山 |
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| 作者单位： | 上海交通大学模具CAD国家工程研究中心; |
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| 基金项目： | 国家“973”计划资助项目(2006CB705401) |
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| 摘 要： | 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。
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| 关 键 词： | Cr9Mo高合金钢 动态回复 动态再结晶 流变应力模型 |
Thermal Flow Stress Constitutive Equation of Cr9Mo High-alloy Steel |
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| ZHOU Bin,SHEN Yu,CHEN Jun,CUI Zhen-shan.Thermal Flow Stress Constitutive Equation of Cr9Mo High-alloy Steel[J].Materials For Mechanical Engineering,2009(9). |
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| Authors: | ZHOU Bin SHEN Yu CHEN Jun CUI Zhen-shan |
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| Affiliation: | ZHOU Bin,SHEN Yu,CHEN Jun,CUI Zhen-shan(National Engineering Research Center of Die and Mold CAD,Shanghai Jiaotong University,Shanghai 200030,China) |
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| Abstract: | The hot compressive experiment of Cr9Mo high-alloy steel was carried out on Gleeble-1500D thermo-simulation machine.The hot plastic behavior of the steel was investigated at temperatures ranging from 1 173 to 1 473 K and strain rates from 10-3-1 s-1.Based on the theory of the classical stress-dislocation relation and the kinematics of the dynamic recrystallization,the flow stress constitutive equations in the work hardening-dynamical recovery stage and dynamical recrystallization stage were established for ... |
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| Keywords: | Cr9Mo high alloy steel dynamic recovery dynamic recrystallization flow stress models |
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