低层错能奥氏体钢的变形硬化特点  

Deformation and Hardening Characteristics of Low SFE Austenitic Steel

作　　者：张旺峰[1] 陈瑜眉[1] 朱金华[1] 

机构地区：[1]西安交通大学金属材料强度国家重点实验室,西安710049

出　　处：《材料工程》2000年第2期25-27,36,共4页Journal of Materials Engineering

基　　金：国家自然科学基金!资助项目 (59771 0 4 8)

摘　　要：研究了低层错能奥氏体不锈钢和高锰钢低温下的变形行为,根据两者拉伸应力应变曲线硬化阶段的相似性,提出曲线由基体硬化、行为软化和结构硬化三部分合成,应力应变曲线的上凹特征是软化主导与硬化共同作用的结果。分析了两种材料变形过程的相似性与不同点及其原因。The hardening characteristics of austenite stainless steel and Hadfield manganese steel of low stacking fault energy were investigated. Basing on the similarity of both two stress strain curves on hardening stage, we proposed that the curves were composed of matrix hardening, behavior softening and structure hardening From that we explained the partial stress strain curve of upward curvature was resuled from the interaction of dominant softening and hardening The similarity and difference in defomation process of two kinds of materials were discussed and the cause was analyzed

关 键 词：行为软化 结构硬化 不锈钢 高锰钢 低温变形 

分 类 号：TG142.71[一般工业技术—材料科学与工程] TG145[金属学及工艺—金属材料]