Effect of tool tilt angle on strength and microstructural characteristics of friction stir welded lap joints of AA2014-T6 aluminum alloy

作     者：C.RAJENDRAN K.SRINIVASAN V.BALASUBRAMANIAN H.BALAJI P.SELVARAJ C.RAJENDRAN;K.SRINIVASAN;V.BALASUBRAMANIAN;H.BALAJI;P.SELVARAJ

作者机构：Department of Mechanical EngineeringSri Krishna College of Engineering and TechnologyCoimbatore Tamil Nadu 641008India Center for Materials Joining and Research(CEMAJOR)Annamalai UniversityTamil Nadu 608002India Aeronautical Development AgencyBangaloreKarnataka 560017India 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2019年第29卷第9期

页      面：1824-1835页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 0703[理学-化学] 0814[工学-土木工程] 0702[理学-物理学] 

基　　金：Aeronautical Development Agency (ADA)  Bangalore  India  for the financial support to carry out this investigation through an R&D project No: FSED 83.07.03 

主　　题：AA2014 aluminium alloy friction stir lap welding tool tilt angle lap shear strength microstructure 

摘      要：Friction stir welding(FSW)has been extensively adopted to fabricate aluminium alloy joints by incorporating various welding parameters that include welding speed,rotational speed,diameters of shoulder and pin and tool tilt *** parameters significantly affect the weld *** tilt angle is one of the significant process parameters among the weld *** present study focused on the effect of tool tilt angle on strength of friction stir lap welding of AA2014-T6 aluminium *** tool tilt angle was varied between 0°and 4°with an equal increment of 1°.Other process parameters were kept *** and microstructure analysis,microhardness measurement,scanning electron micrograph,transmission electron micrograph and energy dispersive spectroscopy analysis were performed to evaluate the lap shear strength of friction stir lap welded *** proved that,defect-free weld joint was obtained while using a tool tilt angle of 1°to 3°.However,sound joints were welded using a tool tilt angle of 2°,which had the maximum lap shear strength of 14.42 kN and microhardness of HV *** joints welded using tool tilt angles of 1°and 3°yielded inferior lap shear strength due to unbalanced material flow in the weld region during FSW.