304不锈钢高温非比例多轴应变循环变形行为研究  

On Cyclic Deformation of 304 Stainless Steel under Strain-Controlled Nonproportionally Multiaxial Loading at High Temperatures

作　　者：张娟[1] 高庆[1] 康国政[1] 刘宇杰[1] 

机构地区：[1]西南交通大学应用力学与工程系,成都610031

出　　处：《核动力工程》2006年第4期44-49,共6页Nuclear Power Engineering

基　　金：国家自然科学基金NSFC10402037;西南交通大学博士生创新基金

摘　　要：为了对材料的高温应变循环变形行为进行精确的本构描述,在350℃和700℃下,对304不锈钢在不同加载路径下的单轴和非比例多轴应变循环变形行为进行了实验研究。讨论了材料在不同加载路径及不同工况下的循环硬化特性。研究表明：304不锈钢的高温非比例多轴应变循环变形行为具有明显的温度依赖性和路径依赖性。研究结果为后续循环本构模型的建立提供了实验基础。In order to accurately describe the strain-controlled cyclic deformation of material at high temperatures, an experimental research was carried out on the cyclic deformation of 304 stainless steel subjected to uni-axial and non-proportionally multi-axial cyclic straining at 350℃ and 700℃. The cyclic hardening behavior under different loading paths and different load conditions was studied. It is shown from the research that the non-proportionally multi-axial strain-controlled cyclic deformation of 304 stainless steel at high temperatures has distinct dependence on temperatures and loading paths. This result is useful to establish constitutive model for the cyclic deformation of the material.

关 键 词：304不锈钢 非比例 多轴加载 高温 应变循环 

分 类 号：TG113.25[金属学及工艺—物理冶金]