30Cr2Ni4MoV低压转子钢不同微观组织下的力学性能  

Mechanical properties of 30Cr2Ni4MoV low-pressure rotor steel with different microstructures

作　　者：潘东煦[1] 顾剑锋[1] 陈睿恺[1] 韩利战[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：《金属热处理》2011年第5期1-4,共4页Heat Treatment of Metals

基　　金：国家重点基础研究发展计划项目(2007CB613805)

摘　　要：利用Gleeble 3500热模拟试验机对30Cr2Ni4MoV汽轮机转子钢不同微观组织(马氏体、贝氏体和奥氏体)在不同温度下的力学性能(弹性模量、屈服强度和塑性模量)进行测定,并将它们拟合为温度的三次多项式函数。根据各力学性能与温度关系分析和讨论了它们的变化机理,为热处理工艺的数值模拟和优化设计提供重要依据。Mechanical properties of 30Cr2Ni4MoV low pressure rotor steel with different microstructures were investigated at different temperatures by Gleeble 3500 thermal simulator.The Young＇s modulus,yield strength and plastic modulus of the samples with microstructure of martensite,bainite and austenite respectively were obtained and fit into cubic polynomial functions of temperature.The analysis and discussion on the mechanism of mechanical properties variation were presented according to their relationships with temperature,and it provides an important basis for numerical simulation of heat treatment process and its optimization.

关 键 词：真应力-真应变曲线 弹性模量 屈服强度 塑性模量 热模拟试验机 

分 类 号：TG161[金属学及工艺—热处理]