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

Amir Hossein Baghdadi; Zainuddin Sajuri; Nor Fazilah Mohamad Selamat; Mohd Zaidi Omar; Yukio Miyashita; Amir Hossein Kokabi

doi:10.1007/s12613-019-1834-5

Volume 26 Issue 10

Oct. 2019

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文章导航 > 矿物冶金与材料学报（英文） > 2019 > 26(10): 1285-1298

Amir Hossein Baghdadi, Zainuddin Sajuri, Nor Fazilah Mohamad Selamat, Mohd Zaidi Omar, Yukio Miyashita, and Amir Hossein Kokabi, Effect of intermetallic compounds on the fracture behavior of dissimilar friction stir welding joints of Mg and Al alloys, Int. J. Miner. Metall. Mater., 26(2019), No. 10, pp. 1285-1298. https://doi.org/10.1007/s12613-019-1834-5

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Amir Hossein Baghdadi, Zainuddin Sajuri, Nor Fazilah Mohamad Selamat, Mohd Zaidi Omar, Yukio Miyashita, and Amir Hossein Kokabi, Effect of intermetallic compounds on the fracture behavior of dissimilar friction stir welding joints of Mg and Al alloys, Int. J. Miner. Metall. Mater., 26(2019), No. 10, pp. 1285-1298. https://doi.org/10.1007/s12613-019-1834-5

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研究论文

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

Centre for Materials Engineering and Smart Manufacturing, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor 43600, Malaysia
Department of Mechanical Engineering, Nagaoka University of Technology, Nagaoka, 940-2188, Japan
Department of Materials Science and Engineering, Sharif University of Technology, Tehran 11365-11155, Iran

通讯作者:
Amir Hossein Baghdadi E-mail: baghdadi.amirhossein@gmail.com

Zainuddin Sajuri E-mail: zsajuri@ukm.edu.my

中文摘要

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.

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Research Article

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

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Abstract

Abstract

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.
- aluminum alloy;
- magnesium alloy;
- intermetallic compounds;
- dissimilar welded joint;
- friction stir welding

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

中文摘要

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

Abstract

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