横向交变磁场对铝合金电弧增材成形组织与性能的影响

doi:10.11896/cldb.21050158

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Abstract In order to refine the grain size, reduce the defects and improve the mechanical properties of the deposited layer, the aluminum alloy deposited layer was prepared by coupling the transverse magnetic field during the arc additive forming process. The microstructure and mechanical properties of the deposited layer were characterized and analyzed, and the influence of the excitation current change on the microstructure and properties of the deposited layer in the transverse alternating magnetic field was studied. The results show that with the action of magnetic field, the number of columnar crystals and equiaxed crystals are decreased and increased respectively, and the grain size was refined. When the excitation current was 11 A, the microhardness of the deposited layer was 83.9HV on average, which was nearly 10% higher than that without magnetic field. When the excitation current was 8 A, the tensile strengths in transverse and longitudinal directions were 275.7 MPa and 254.3 MPa respectively, and the elongations were 21.9% and 26.2% on average, respectively. The comprehensive mechanical properties were higher than that without magnetic field.

Key words： arc additive manufacturing transverse alternating magnetic field aluminum alloy microstructure mechanical properties

Published: 25 February 2023 Online: 2023-03-02

CLC number:

TG455

Fund:Key Project of Guangdong Basic and Applied Basic Research Foundation (2020B1515120027) and Major Science and Technology Projects of Wuhu City (2021ZD08).

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	LI Dan
	WANG Qiwei
	HAN Guofeng
	ZHANG Baoguo
	ZHU Sheng
	LI Wei

Cite this article:

LI Dan,WANG Qiwei,HAN Guofeng, et al. Effect of Transverse Alternating Magnetic Field on the Microstructure and Properties of Aluminum Alloy Arc Additive Forming[J]. Materials Reports, 2023, 37(4): 21050158-6.

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http://www.mater-rep.com/EN/10.11896/cldb.21050158 OR http://www.mater-rep.com/EN/Y2023/V37/I4/21050158

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