3Cr2Mo钢马氏体相变塑性及应力对其相变动力学的影响  

Transformation plasticity of martensitic transformation and effect of stress on its kinetics in 3Cr2Mo steel

作　　者：罗芳[1] 韩利战[1] 顾剑锋[1] 潘健生[1] 

机构地区：[1]上海交通大学材料科学与工程学院,上海市激光制造与材料改性重点实验室,上海200240

出　　处：《材料热处理学报》2011年第6期98-102,共5页Transactions of Materials and Heat Treatment

基　　金：上海市科委重大科技攻关项目(08DZ1100302)

摘　　要：通过不同单轴拉/压应力载荷作用下的膨胀试验研究了3Cr2Mo钢中马氏体相变的相变塑性和应力对马氏体相变动力学的影响。结果表明:所测定的Greenwood-Johnson相变塑性模型中参数K随等效应力增加而增加,表征马氏体相变动力学的Koistinen-Marburger方程中系数α约为0.0236,应力状态对其没有明显影响。马氏体点(MS)范围在410～438℃之间,且随等效应力值的增加而升高。Transformation plasticity and effects of stress on martensitic transformation kinetics in 3Cr2Mo steel were studied by dilatometric experiments under different applied tensile and compressive stress.Results show that transformation plasticity coefficient K in the Greenwood-Johnson model increases with increasing equivalent stress,and the coefficient α in Koistinen-Marburger equation of martensitic transformation kinetics is about 0.0236,which has no obvious relationship with the stress state.The MS temperature is in the range of 410-438 ℃,and increases with increase of equivalent stress.

关 键 词：3Cr2Mo钢 马氏体相变动力学 相变塑性 相变应变 

分 类 号：TG142.24[一般工业技术—材料科学与工程]