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Wire and arc additive manufacturing of 4043 Al alloy using a cold metal transfer method
International Journal of Minerals, Metallurgy and Materials ( IF 4.8 ) Pub Date : 2020-06-10 , DOI: 10.1007/s12613-019-1930-6
Zhi-qiang Liu , Pei-lei Zhang , Shao-wei Li , Di Wu , Zhi-shui Yu

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.



中文翻译:

使用冷金属转移方法制造4043铝合金的线和电弧增材制造

将冷金属转移加脉冲(C + P)电弧应用于4043铝合金零件的增材制造中。研究了零件制造中的参数。还对零件的性能和微观结构进行了表征。实验结果表明,以8 mm / s的速度和4.0 m / min的送丝速度进行焊接适合于制造薄壁零件,并且可以采用往复扫描法来制造厚壁零件。C + P模式的薄壁孔比冷金属转移(CMT)模式的孔少。C + P模式的薄壁和厚壁部分分别显示出最大拉伸强度172和178 MPa。界面处和粗枝晶处的硬度降低,而细化晶粒区域的硬度增加。

更新日期:2020-06-10
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