304不锈钢高温非比例多轴棘轮行为实验研究  

Experimental Research on Non-proportionally Multi-axial Ratcheting of 304 Stainless Steel at High Temperatures

作　　者：张娟[1] 康国政[1] 高庆[1] 孙亚芳[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5期61-64,共4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资助项目

摘　　要：为了对材料的高温棘轮行为进行精确的本构描述,在350℃和700℃下,对304不锈钢的单轴和非比例多轴棘轮行为进行了系统的实验研究。讨论了材料在不同加载路径以及不同工况下的棘轮变形特性,揭示了304不锈钢非比例多轴棘轮行为的平均应力和应力幅值依赖性,以及温度依赖性和路径依赖性。In order to accurately describe the ratcheting behavior of material at high temperature, an experimental research was carried out on the uni-axial and non-proportionally multi-axial ratcheting of 304 stainless steel at 350℃ and 700℃. The ratcheting behavior under different loading paths and different load conditions was studied. It was shown from the study that the non-proportionally multi-axial ratcheting of 304 stainless steel at high temperatures has distinct dependence on the stress amplitude, mean stress, temperatures and loading paths. This result is useful to establish constitutive model for the non-proportionally multi-axial ratcheting of material at high temperature.

关 键 词：棘轮行为 非比例 多轴加载 高温 304不锈钢 

分 类 号：TG113.25[金属学及工艺—物理冶金]