电焊机2012，Vol.42Issue(9)：62-65,4.
振动时效法消除SMA490BW耐候钢焊接残余应力研究
Research on the residual stress of SMA490BW atmospheric corrosion resistant steel treated by vibratory stress relief
周伟 1陈辉2
作者信息
- 1. 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
Gas shielded welding was done on SMA 490 BW atmospheric corrosion resistant steel and vibratory stress relief treatment was made to the weldments.The residual stresses were tested and analyzed before and after vibratory stress relief treatment by adopting blind-hole method.h doesn't have a good effect on releasing residual stresses after stress relief treatment.The test specimens were treated by vibratory stress treatment and then the residual stresses were tested again for the purpose of getting rid of accidental error.There is a group of larger residual stresses in the weld zone in both experiments.The residual stresses decreased lightly after the vibratory treatment,but the stress eliminating rate is only 10-odd percent.The possible reasons causing to the unsatisfied effect of releasing residual stresses are analyzed in the paper and a conclusion comes to us that the vibratory stress relief treatment works well on releasing residual stress of those heavy and large-sized work pieces,while hardly on light or small-sized ones.So the methods like the ultrasound impact treatment may be much better.关键词
振动时效/残余应力/盲孔法/耐候钢Key words
vibratory stress relief/ residual stress/ blind-hole method/ atmospheric corrosion resistant steel分类
矿业与冶金引用本文复制引用
周伟,陈辉..振动时效法消除SMA490BW耐候钢焊接残余应力研究[J].电焊机,2012,42(9):62-65,4.
