摘要
采用热模拟试验机Gleeble-3800模拟了S32003双相不锈钢不同焊接线能量下的焊接热循环,研究了模拟焊接热影响区的组织与性能。结果表明:随着焊接线能量的增加,焊接热影响区的铁素体体积分数逐渐由88.7%减少到了58.7%,铁素体和奥氏体两相组织越来越粗大,焊接热影响区的冲击功先增大后减小;随着测试温度的降低,热影响区的冲击功逐渐降低,低温冲击韧性随着线能量增加下降得更为显著。
Welding thermal cycle of S32003 stainless steel with different welding energy input was simulated on thermomechanical simulator Gleeble-3800 to investigate the microstructure and impact toughness of the heat affected zone. The results indicated that with the increasing of welding energy input the ferrite content decreased from 88.7% to 58.7%,the dual phases microstructure was getting coarser and the impact toughness firstly increased and then decreased in the welding heat affected zone. The impact toughness gradually decreased as the testing temperature decreasing and the low-temperature impact toughness dropped dramatically when energy input increasing.
出处
《物理测试》
CAS
2015年第5期18-21,共4页
Physics Examination and Testing
关键词
热模拟
线能量
组织
冲击功
thermal simulation
energy input
microstructure
impact toughness
