Mechanical properties of 2024-T4 aluminium alloy joints in ultrasonic vibration enhanced friction stir welding

作     者：刘小超 武传松 Michael Rethmeier Andreas Pittner 

作者机构：Key Lab for Liquid-Solid Structure Evolution and Materials Processing ( Ministry of Education) andInstitute for Materials Joining Shandong University Jinan 250061. China Federal Institute forMaterials Research and Testing Berlin 12205 Germany 

出 版 物：《China Welding》 (中国焊接（英文版）)

年 卷 期：2013年第22卷第4期

页      面：8-13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] 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] 0811[工学-控制科学与工程] 0801[工学-力学（可授工学、理学学位）] 080201[工学-机械制造及其自动化] 

基　　金：The authors are grateful to the financial support for this research from the Sino-German Center for the Promotion of Science (Grant GZ-739) 

主　　题：ultrasonic vibration friction stir welding mechanical properties 

摘      要：Ultrasonic vibration enhanced friction stir welding （UVeFSW） is a recent modification of conventional friction stir welding （FSW）, which transmits ultrasonic vibration directly into the localized area of the workpiece near and ahead of the rotating tool. In this study, a high strength aluminium alloy （2024-T4） was welded by this process and conventional FSW, respectively. Then tensile tests, microhardness tests and fracture surface analysis were performed successively on the welding samples. The tests results reveal that ultrasonic vibration can improve the tensile strength and the elongation of welded joints. The microhardness of the stir zone also increases.