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王帅,顾惠敏,王伟,李承德,任玲玲,王振飚,翟玉春,马培华.ZL205A电弧熔丝增材制造堆积体的组织与性能[J].稀有金属材料与工程(英文),2019,48(9):2910~2916.[Wang Shuai,Gu Huimin,Wang Wei,Li Chengde,Ren Lingling,Wang Zhenbiao,Zhai Yuchun and Ma Peihua.Microstructure and Mechanical Properties of aluminum alloy (ZL205A) wall produced by wire arc additive manufacturing method[J].Rare Metal Materials and Engineering,2019,48(9):2910~2916.]
Microstructure and Mechanical Properties of aluminum alloy (ZL205A) wall produced by wire arc additive manufacturing method
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Received:December 06, 2018??Revised:February 27, 2019
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Key words:?Wire arc additive manufacture(WAAM)??ZL205A aluminum alloy??microstructure??mechanical properties
Foundation item:国家重点研发计划“增材制造与激光制造”重点专项(项目号2018YFB1106300-5)
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Wang Shuai,Gu Huimin,Wang Wei,Li Chengde,Ren Lingling,Wang Zhenbiao,Zhai Yuchun and Ma Peihua??
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Abstract:
??????The wall of ZL205A aluminum alloy were carried out by the wire+arc additive manufacturing technology (WAAM). The microstructure,mechanical properties and so on of ZL205A aluminium alloy wall were investigated by metallographic, SEM, EDS and tensile tests, and compared with that of metal casting alloy. The results show that the thickness of the wall is uniform and the surface is smooth. Meanwhile, the burning rates of B and Cd inStheSdepositSbody are 60% and 50%, respectively. Compared with cast alloys at casting condition, the as-deposited WAAM ZL205A have more uniform grain size, smaller grain size and uniform distribution of precipitated phases in grain and grain boundaries. After heat treatment (T6), θ-phase is completely dissolved into Al matrix, and the re-melted T-phase distributes on the grain boundary. The tensile strength, yield strength and elongation of the wall are 500 Mpa, 450 Mpa and 10%, respectively, which are higher than that of the metal casting alloy, and the mechanical properties of the alloy in transverse and longitudinal directions are the same.