摘要
采用热补偿工艺垫片电阻点焊法对铝合金A5052与不锈钢SUS304异种材料进行了焊接。探讨了焊接参数对接头的抗剪与抗拉性能的影响,并通过电子显微镜对接合界面区进行了观察,分析了界面反应物形貌及厚度分布等微观特性。研究结果显示:一锯齿状反应层在接合界面生成,其厚度随焊接电流以及界面上位置的变化而变化,界面反应层对接头抗剪强度无影响,但能减弱接头抗拉强度。
Aluminum alloy A5052and austenitic stainless steel SUS304was welded using a thermal compensation resistance spot welding method.The influence of welding parameters on the shear and tensile strength of the joint was investigated.The interfacial reaction layer morphological character and its thickness distribution on the welding interface was observed and analyzed using electron microscopy.A serration reaction layer,where the thickness varied with the welding current and position at the welding interface,was observed.Mechanical property analysis reveals that the reaction layer has little effect on the tensile shear strength of the joint and affects the cross tension strength of the joint.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2013年第20期2815-2819,共5页
China Mechanical Engineering
基金
国家自然科学基金-河南省人才培养基金联合资助项目(U1204520)
河南省科技攻关项目(112102210176)
河南省基础与前沿技术研究计划资助项目(122300410202)
河南省高校科技创新团队支持计划资助项目(13IRTSTHN003)
关键词
铝合金
不锈钢
电阻点焊
界面
aluminum alloy
stainless steel
resistance spot welding
interface
