电焊机2017，Vol.47Issue(3)：32-36,5.DOI:10.7512/j.issn.1001-2303.2017.03.06
喷砂处理对Al-Zn-Mg合金焊接接头应力腐蚀性能的影响
Influence of sand blasting treatment on stress cracking corrosion of A7N01 aluminum alloy welding joint
付炳欣 1李明星 2黄翠2
作者信息
- 1. 中车青岛四方机车车辆股份有限公司,山东青岛266111
- 2. 西南交通大学生命科学与工程学院,四川成都610031
- 折叠
摘要
Abstract
In this paper,the influence of sand blasting treatment on stress cracking corrosion of A7N01 aluminum alloy joint was studied through slow strain rate test.The results showed that after sand blasting treatment,the tensile residual stress in welding seam of A7N01 joint transferred to compressed stress,and the residual stress distributed more evenly in the treated joint.The stress corrosion sensitive factor (ISSRT) of treated welding joint in 3.5％NaC1 solution was lower than that of untreated joint,and no brittle fracture morphology was seen in the treated joint.The evenly distribution of compressed residual stress on the surface of treated joint decreased the tensile stress loading on the welding seam,which increased the strength of A7N01 welding joint.Furthermore,the compressed residual stress could inhibit the development of crack in corrosion solution,thus improved the anti-corrosion ability of A7N01 welding joint.关键词
Al-Zn-Mg合金/焊接接头/喷砂处理/应力腐蚀/残余应力Key words
Al-Zn-Mg alloy/welding joint/sand blasting treatment/stress crack/residual stress分类
矿业与冶金引用本文复制引用
付炳欣,李明星,黄翠..喷砂处理对Al-Zn-Mg合金焊接接头应力腐蚀性能的影响[J].电焊机,2017,47(3):32-36,5.
