电磁脉冲板件焊接设备研制及镁/铝合金板焊接实验研究

doi:10.19595/j.cnki.1000-6753.tces.200295

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Abstract Magnesium alloys and aluminum alloys are used in industry as light metals. Because of the excellent properties, they are expected to replace steel in the manufacture of lightweight equipment. However, due to the differences in physical and chemical properties of magnesium alloys and aluminum alloys, it is difficult to achieve reliable welding in traditional processes. Electromagnetic pulse welding (EMPW) technology applies electromagnetic force to achieve metallurgical bonding between metal materials, which is expected to solve the welding problems of magnesium alloys and aluminum alloys. In order to explore the feasibility and influencing factors of EMPW of magnesium alloys and aluminum alloys, based on the principle of EMPW, this paper developed a set of 28kJ EMPW equipment for plates. Then the external conditions (discharge voltage and welding gap) required for EMPW of magnesium alloy plates (parent plates) and aluminum alloy plates (flying plates) were developed. The influence of the magnesium's characteristics on the properties of joints was also studied in experiments. The results show that the reliable welding of magnesium alloy plates and aluminum alloy plates can be achieved by EMPW. Within a certain range, the welding performance will be improved with the increase of discharge voltage. The mechanical properties of the joint first increase and then decrease with the increase of the welding gap. Moreover, the mechanical anisotropy caused by the particular structure of the magnesium alloy plates will affect the joint performance. Specifically, under the same conditions, the tensile strength of the welded joint is the biggest and the worst when the angle between the welding direction and the rolling direction is 0°and 90°, respectively. This paper can provide technical support and reference for EMPW of magnesium alloys and aluminum alloys.

Key words： Electromagnetic pulse welding magnesium alloy aluminum alloy anisotropy joint strength

Received: 24 March 2020

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TM89

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	Li Chengxiang
	Du Jian
	Zhou Yan
	Shen Ting
	Yao Chenguo

Cite this article:

Li Chengxiang,Du Jian,Zhou Yan等. Development of Electromagnetic Pulse Welding Equipment for Plates and Experimental Research on Magnesium/Aluminum Alloy Welding[J]. Transactions of China Electrotechnical Society, 2021, 36(10): 2018-2027.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.200295 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/I10/2018

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