Assessing the Bonding Interface Characteristics and Mechanical Properties of Bobbin Tool Friction Stir Welded Dissimilar Aluminum Alloy Joints

作     者：Quan Wen Wenya Li Vivek Patel Luciano Bergmann Benjamin Klusemann Jorge F.dos Santos Quan Wen;Wenya Li;Vivek Patel;Luciano Bergmann;Benjamin Klusemann;Jorge F.dos Santos

作者机构：State Key Laboratory of Solidifi cation ProcessingShaanxi Key Laboratory of Friction Welding TechnologiesNorthwestern Polytechnical UniversityXi’an 710072China Institute of Materials ResearchMaterials MechanicsSolid-State Joining ProcessesHelmholtz-Zentrum GeesthachtMax-Planck-Straße 121502 GeesthachtGermany Institute of Product and Process InnovationLeuphana University of LüneburgUniversitätsallee 121335 LüneburgGermany 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2021年第34卷第1期

页      面：125-134页

核心收录：

学科分类：080503[工学-材料加工工程] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 08[工学] 0807[工学-动力工程及工程热物理] 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] 0703[理学-化学] 0811[工学-控制科学与工程] 080201[工学-机械制造及其自动化] 

基　　金：the support provided by the China Scholarship Council(No.201806290070) the fund by the State Key Laboratory of Solidifi cation Processing in NWPU(No.2019-QZ-01) 

主　　题：Bobbin tool friction stir welding Dissimilar aluminum alloy Bonding interface Precipitation Mechanical property 

摘      要：This study focuses on the bonding interface characteristics and mechanical properties of the bobbin tool friction stir welded dissimilar AA6056 and AA2219 aluminum alloy joints using diff erent welding *** arise solely in the stir zone at the AA2219 side.A distinct boundary with limited material mixing develops at the middle section of the bonding interface,while excellent material mixing with an irregularly jagged pattern forms at the top and bottom sections of the bonding *** the welding speed,the material mixing is rarely changed at the middle section in comparison with the bottom ***,a small diff erence between Guinier–Preston dissolution and Q phase precipitation leads to rare change of hardness in the heat aff ected zone(HAZ)at the AA6056 *** increased hardness of the HAZ at the AA2219 side is attributed to avoidance of the dissolution ofθ’’phase precipitates.A maximum tensile strength of 181 MPa is obtained at 300 mm *** occur at the AA6056 side near the top and bottom surfaces and at the bonding interface in the middle section of the *** regions close to the top and bottom surfaces of the joints show a better ductility.