电焊机2017，Vol.47Issue(4)：25-28,33,5.DOI:10.7512/j.issn.1001-2303.2017.04.05
线能量对A7N01铝合金焊接接头残余应力的影响
Effect of line energy on the residual stress of A7N01 aluminum alloy welded joint
马梦林 1郭红玲 1马传平 2徐宝宏2
作者信息
- 1. 中车长春轨道客车股份有限公司,吉林长春130062
- 2. 西南交通大学材料科学与工程学院,四川成都610031
- 折叠
摘要
Abstract
The welding residual stress is due to the non-uniformity of the heat input during the welding process,so the welding process parameters,especially the welding line energy has a great influence on the residual stress of the welded joint.The effect of line energy change on the residual stress of A7N01S-T5 aluminum alloy welded joint in double pulse MIG welding is studied by actual measurement and simulating calculation.The results show that heat input improves as the line energy increases,the peak value of longitudinal tensile residual stress increases from 149 MPa to 190 MPa while there is no obvious change in the peak values of transverse tensile residual stress,and the peak value of transverse tensile residual stress is higher about 27 MPa than that of longitudinal tensile residual stress.The residual stress distribution trend and the maximum tensile residual stress value of the simulation calculation results are similar to those of measured results,so these two results have a better confirming relationship.关键词
A7N01铝合金/线能量/残余应力/仿真计算Key words
A7N01 aluminum alloy/line energy/residual stress/simulating calculation分类
矿业与冶金引用本文复制引用
马梦林,郭红玲,马传平,徐宝宏..线能量对A7N01铝合金焊接接头残余应力的影响[J].电焊机,2017,47(4):25-28,33,5.
