Wire and arc additive manufacturing of 4043 Al alloy using a cold metal transfer method
来源期刊：International Journal of Minerals Metallurgy and Materials2020年第6期
论文作者：Zhi-qiang Liu Pei-lei Zhang Shao-wei Li Di Wu Zhi-shui Yu
文章页码：783 - 791
摘 要：Cold metal transfer plus pulse（C + P） arc was applied in the additive manufacturing of 4043 Al alloy parts. Parameters in the manufacturing of the parts were investigated. The properties and microstructure of the parts were also characterized. Experimental results showed that welding at a speed of 8 mm/s and a wire feeding speed of 4.0 m/min was suitable to manufacture thin-walled parts, and the reciprocating scanning method could be adopted to manufacture thick-walled parts. The thin-walled parts of the C + P mode had fewer pores than those of the cold metal transfer（CMT） mode. The thin-and thick-walled parts of the C + P mode showed maximum tensile strengths of 172 and 178 MPa, respectively. Hardness decreased at the interface and in the coarse dendrite and increased in the refined grain area.
Zhi-qiang Liu1,2，Pei-lei Zhang1,2，Shao-wei Li1,2，Di Wu1,2，Zhi-shui Yu1,2
1. School of Materials Engineering, Shanghai University of Engineering Science2. Shanghai Collaborative Innovation Center of Laser Advanced Manufacturing Technology
摘 要：Cold metal transfer plus pulse（C + P） arc was applied in the additive manufacturing of 4043 Al alloy parts. Parameters in the manufacturing of the parts were investigated. The properties and microstructure of the parts were also characterized. Experimental results showed that welding at a speed of 8 mm/s and a wire feeding speed of 4.0 m/min was suitable to manufacture thin-walled parts, and the reciprocating scanning method could be adopted to manufacture thick-walled parts. The thin-walled parts of the C + P mode had fewer pores than those of the cold metal transfer（CMT） mode. The thin-and thick-walled parts of the C + P mode showed maximum tensile strengths of 172 and 178 MPa, respectively. Hardness decreased at the interface and in the coarse dendrite and increased in the refined grain area.
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