5A06与7A52-T6铝合金摩擦螺柱焊组织与力学性能研究  

Microstructures and Mechanical Properties of Friction Stud Welding between5A06 and 7A52-T6 Aluminum Alloys

作　　者：梁明阳 彭小洋 韩世伟 马潇天 谢聿铭 黄永宪[2,3] 孟祥晨[2,3] Liang Mingyang;Peng Xiaoyang;Han Shiwei;Ma Xiaotian;Xie Yuming;Huang Yongxian;Meng Xiangchen(Chongqing Tiema Industries Group Co.,Ltd.,Chongqing 400050;State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,Harbin 150001;Zhengzhou Research Institute,Harbin Institute of Technology,Zhengzhou 450046)

机构地区：[1]重庆铁马工业集团有限公司,重庆400050 [2]先进焊接与连接国家重点实验室,哈尔滨工业大学,哈尔滨150001 [3]郑州研究院,哈尔滨工业大学,郑州450046

出　　处：《航天制造技术》2023年第4期36-39,共4页Aerospace Manufacturing Technology

基　　金：国家自然科学基金项目(521**301、522**350)。

摘　　要：针对高强铝合金螺柱与基板熔化焊接存在的锌元素烧损、气孔/裂纹倾向性高、界面氧化膜难去除等问题,本研究提出了轴肩辅助式摩擦螺柱焊方法,成功实现了5A06铝合金螺柱与7A52-T6铝合金基板的优质焊接。结果表明,辅助轴肩可同时实现“控形”和“控性”的作用,焊缝表面成形光滑,无飞边缺陷。内部界面结合良好,无弱连接等缺陷。在优化的焊接参数下,摩擦螺柱焊剪切强度达245MPa。Aiming at the issues of zinc burning-loss,high porosity and crack tendency,and difficulty on removal ofthe interfacial oxide films associated with fusion welding of high-strength aluminum alloy studs and substrates,sleeve-assisted friction stud welding was proposed,in which the 5A06 studs and 7A52-T6 substrates were successfullywelded.The results showed that the sleeve could realize the synchronous controlling of shape and performance.Thesmooth surface could be obtained and no flash defects were formed on the surface of joint.Meanwhile,the interfacialbonding condition was sound without kissing-bond defect.The shear strength of the friction stud welding joints reached245MPa.

关 键 词：异种铝合金 摩擦螺柱焊 微观组织 力学性能 

分 类 号：TG453[金属学及工艺—焊接] V19[航空宇航科学与技术—人机与环境工程]