钛/铝异种金属旋转摩擦焊接接头界面组织与性能  

Interface Microstructure and Properties of Titanium/Aluminum Dissimilar Metal Rotary Friction Welding Joints

作　　者：胡茂辉 陈继兵 李瑞迪[2] 支盛兴 刘博文 HU Maohui;CHEN Jibing;LI Ruidi;ZHI Shengxing;LIU Bowen(Wuhan Polythechnic University,School of Mechanical Engineering,Wuhan 430023,China;Central South University,State Key Laboratory of Powder Metallurgy,Changsha 410083,China)

机构地区：[1]武汉轻工大学机械工程学院,武汉430023 [2]中南大学粉末冶金国家重点实验室,长沙410083

出　　处：《焊管》2023年第11期26-33,共8页Welded Pipe and Tube

基　　金：山东省自然科学基金“面向增材制造的高性能功能梯度材料设计与控形控性研究”(项目编号ZR2020ZD04);湖北省科技计划项目“钛合金管高频感应焊接关键技术及产业化”(项目编号2022EHB020)。

摘　　要：为了研究钛/铝异种金属旋转摩擦焊接接头界面金属间化合物形成的过程,对激光增材制造技术制备的Ti6Al4V和AlSi10Mg进行了旋转摩擦焊接,并通过显微组织分析、拉伸试验、硬度测试等手段研究了接头界面的组织和力学性能。从X射线衍射结果和EDS元素变化发现接头界面处形成了TiAl3相,SEM图也观察到焊接界面有脆性金属层的存在。通过显微组织表征和力学性能测试,系统地验证了界面生成较少的脆性金属化合物。In order to study the formation process of intermetallic compounds at the interface of Titanium/Aluminum dissimilar metal rotary friction welded joints,Ti6Al4V and AlSi10Mg prepared by the laser additive manufacturing technology were subjected to the rotary friction welding.The microstructure and mechanical properties of the joint interface were studied through the microstructure analysis,tensile testing,hardness testing,and other methods.From the X⁃ray diffraction results and EDS element changes,it was found that TiAl3 phase was formed at the joint interface,and the presence of a brittle metal layer was also observed in the SEM image at the welding interface.Through microstructure characterization and mechanical performance testing systems,it was verified that there are fewer brittle metal compounds generated at the interface.

关 键 词：旋转摩擦焊 异种接头 Ti6Al4V/AlSi10Mg 金属间化合物 

分 类 号：TG453.9[金属学及工艺—焊接]