铝基复合材料搅拌摩擦焊研究现状  

Research Status of Friction Stir Welding of Aluminum Matrix Composites

作　　者：高士康 赵洪运[1,2] 李高辉 周利[1,2] 刘会杰 张成聪[3] GAO Shikang;ZHAO Hongyun;LI Gaohui;ZHOU Li;LIU Huijie;ZHANG Chengcong(State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,Harbin 150001,China;Shandong Provincial Key Laboratory of Special Welding Technology,Harbin Institute of Technology at Weihai,Weihai 264209,Shandong,China;Shanghai Aerospace Equipments Manufacturer,Shanghai 200245,China)

机构地区：[1]哈尔滨工业大学先进焊接与连接国家重点实验室,哈尔滨150001 [2]哈尔滨工业大学(威海)山东省特种焊接技术重点实验室,山东威海264209 [3]上海航天设备制造总厂有限公司,上海200245

出　　处：《材料导报》2022年第24期145-153,共9页Materials Reports

基　　金：国家自然科学基金(51974100,51775143);上海市国际科技合作项目(18190730800)。

摘　　要：铝基复合材料具有低密度、高比强度、高硬度、高耐磨性、良好的导电性、良好的热稳定性等优点,被广泛应用于汽车、航空航天等领域,已经成为重要的工程结构材料,其焊接受到了国内外学者的密切关注。然而,铝基复合材料中加入的增强相使其与基体铝合金之间的热膨胀系数、导热系数等热物理性能相差较大,导致其焊接性较差。采用传统熔焊方法焊接此类材料时难度较大,接头性能较低,限制了其工程应用。搅拌摩擦焊作为一种新型的固相连接技术,应用于铝基复合材料焊接时展现出接头成形良好、性能优异等特点,近年来受到了国内外的广泛关注。本文重点介绍了国内外针对铝基复合材料搅拌摩擦焊接的研究现状,并对其未来的研究方向做出展望。Aluminum matrix composites have been widely used in the automotive and aerospace industries due to the superior properties of low density,high specific strength,high hardness,good electrical conductivity and thermal stability.Therefore,as one of the important engineering structure materials,the welding of aluminum matrix composites has been paid extensive attention by the scholars at home and abroad.However,the weldability of the aluminum matrix composites is relatively poor,which could be attributed to significant difference in the thermal expansion coefficient and thermal conductivity between additional reinforcing particles and aluminum alloy.For traditional fusion welding,it is difficult to weld aluminum matrix composites due to the poor joint quality and mechanical performance,which restricts its industrial application.Friction stir welding(FSW),as a new solid state joining method,has shown a series of advantages in case of welding aluminum matrix composites.The welded joints generally exhibit good formation and excellent mechanical performance.In recent years,FSW has received extensive interests.In this paper,the research status of friction stir welding for aluminum matrix composites is introduced,and the future research direction is prospected.

关 键 词：铝基复合材料 搅拌摩擦焊 接头成形 微观组织 力学性能 搅拌头磨损 

分 类 号：TG457.14[金属学及工艺—焊接]