Effect of tool pin profile on microstructure and tensile properties of friction stir welded dissimilar AA 6061e AA 5086 aluminium alloy joints

作     者：M.ILANGOVAN S.RAJENDRA BOOPATHY V.BALASUBRAMANIAN 

作者机构：Department of Mechanical EngineeringCollege of Engineering GuindyAnna University Center for Materials Joining & Research (CEMAJOR)Department of Manufacturing EngineeringAnnamalai University 

出 版 物：《Defence Technology（防务技术）》 (Defence Technology)

年 卷 期：2015年第11卷第2期

页      面：174-184页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：the support extended by the Centre for Materials Joining & Research (CEMAJOR)  Department of Manufacturing Engineering  Annamalai University  Annamalai Nagar  India to carry out this research 

主　　题：摩擦搅拌焊 铝合金接头 焊接接头 组织与性能 轮廓 扫描电子显微镜 异种 刀具 

摘      要：Joints between two different grades of aluminium alloys are need of the hour in many light weight military *** this investigation,an attempt has been made to join the heat treatable(AA 6061) and non-heat treatable(AA 5086) aluminium alloys by friction stir welding(FSW)process using three different tool pin profiles like straight cylindrical,taper cylindrical and threaded *** microstructures of various regions were observed and analyzed by means of optical and scanning electron *** tensile properties and microhardness were evaluated for the welded *** this investigation it is founded that the use of threaded pin profile of tool contributes to better flow of materials between two alloys and the generation of defect free stir *** also resulted in higher hardness values of 83 HV in the stir zone and higher tensile strength of 169 MPa compared to other two *** increase in hardness is attributed to the formation of fine grains and intermetallics in the stir zone,and in addition,the reduced size of weaker regions,such as TMAZ and HAZ regions,results in higher tensile properties.