Effect of intermetallic compounds on the fracture behavior of dissimilar friction stir welding joints of Mg and Al alloys

论文摘要

Joining Mg to Al is challenging because of the deterioration of mechanical properties caused by the formation of intermetallic compounds（IMCs） at the Mg/Al interface. This study aims to improve the mechanical properties of welded samples by preventing the fracture location at the Mg/Al interface. Friction stir welding was performed to join Mg to Al at different rotational and travel speeds. The microstructure of the welded samples showed the IMCs layers containing Al12Mg17（γ） and Al3Mg2（β） at the welding zone with a thickness（< 3.5 μm）. Mechanical properties were mainly affected by the thickness of the IMCs, which was governed by welding parameters. The highest tensile strength was obtained at 600 r/min and 40 mm/min with a welding efficiency of 80%. The specimens could fracture along the boundary at the thermo-mechanically affected zone in the Mg side of the welded joint.

论文目录

文章来源

类型: 期刊论文

作者: Amir Hossein Baghdadi,Zainuddin Sajuri,Nor Fazilah Mohamad Selamat,Mohd Zaidi Omar,Yukio Miyashita,Amir Hossein Kokabi

来源: International Journal of Minerals Metallurgy and Materials 2019年10期

年度: 2019

分类: 工程科技Ⅰ辑

专业: 金属学及金属工艺

单位: Centre for Materials Engineering and Smart Manufacturing, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia,Department of Mechanical Engineering, Nagaoka University of Technology,Department of Materials Science and Engineering, Sharif University of Technology

基金: Universiti Kebangsaan Malaysia for supporting this research project through the research funding (AP-2015-016)

分类号: TG453.9

页码: 1285-1298

总页数: 14

文件大小: 5788K

下载量: 25

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