电弧脉冲对6005A-T6铝合金CMT-P焊接接头组织和性能的影响

doi:10.11896/cldb.23090035

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Abstract 6005A-T6 aluminum alloy has been widely used in welding manufacturing for it's good welding quality. In this work, the effects of cold metal transfer plus pulse (CMT-P) welding process on the macroscopic morphology, microstructure, and mechanical properties of 6005A-T6 aluminum alloy welded joints under different arc pulse numbers were studied. The results show that the mechanical properties of cold metal transfer (CMT) welded joints are close to that of CMT-P, and the hardness distribution of the two kind of joints are almost the same. By CMT-P, as the number of pulses increases, the weld width increases and the grain size in the weld center increases. When the number of pulses is 6, the poro-sity of the CMT-P welded joint is close to 0%, the ultimate tensile strength is 158 MPa, which is 61.2% of the base metal, and the elongation of the joint is 6.74%. The tensile fracture positions of the joints are all in the heat affected zone, and the fracture form is ductile fracture.

Key words： CMT-P arc pulse appearance of welding zone microstructure mechanical property

Published: 10 December 2024 Online: 2024-12-10

CLC number:

TG444+.7

Fund:Key R & D Plan of Yunnan Province (202103AA080017,202203AE140011 ), the Basic Research Project of Yunnan Province (202201AU070081).

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	Articles by authors
	ZHU Xuan
	YANG Xiaoyi
	LU Xin
	YANG Shuhan

Cite this article:

ZHU Xuan,YANG Xiaoyi,LU Xin, et al. Effect of Arc Pulse on Microstructure and Properties of 6005A-T6 Aluminum Alloy CMT-P Welded Joint[J]. Materials Reports, 2024, 38(23): 23090035-7.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.23090035 OR http://www.mater-rep.com/EN/Y2024/V38/I23/23090035

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