文献类型：期刊文献

中文题名：奥氏体不锈钢焊接残余应力的数值模拟与测定

英文题名：Numerical Simulation and Determination of Welding Residual Stress in Austenitic Stainless Steel

作者：钟诚[1];惠虎[1]

机构：[1]华东理工大学机械与动力工程学院,上海200237

年份：2016

期号：2

起止页码：45

中文期刊名：机械设计与制造

外文期刊名：Machinery Design & Manufacture

收录：CSTPCD;;北大核心:【北大核心2014】；

基金：中央高校基本科研业务费专项资金(222201313014);国家科技支撑计划(2011BAK06B02-04)

语种：中文

中文关键词：焊接残余应力;X射线衍射;应力释放;有限元分析;高斯热源

外文关键词：Welding Residual Stress; XRD; Stress Release; FEA; Gauss Heat Source

摘要：奥氏体不锈钢因其低导热性和大膨胀系数,会导致较高的焊接残余应力。由于通常情况下奥氏体不锈钢不作焊后热处理,探究其焊接残余应力对设计制造及后续安全评定有着重要意义。使用有限元数值模拟、X射线衍射法、应力释放法三中方法针对奥氏体不锈钢焊接残余应力分布展开研究,并比较了三中方法的特点和适用情况,分析了实验值和模拟计算结果之间产生差异的原因,并认为304奥氏体不锈钢的最大焊接残余应力接近甚至超过材料的非比例延伸强度。
High we lding residual stress appears in austenitic stainless steel because of itslow thermal conductivity and high expansion coefficient. It is important to research the welding residual stress for design,manufacture and safety assessment since the heat treatment after welding is not performed in austenitic stainless steel. FEA,XRD and stress release were used and the results were compared to find out the distribution of welding residual stress in austenitic stainless steel. The results showed up that the maximum of welding residual stress in 304 austenitic stainless steel exceeds its non-proportional extension strength.