王帅,顾惠敏,王伟,李承德,任玲玲,王振颷,翟玉春,马培华.Al-Cu-Sn合金WAAM堆积体的组织与性能[J].稀有金属材料与工程,2021,50(1):95~101.[Shuai Wang,Huimin Gu,Wei Wang,Chengde Li,Lingling Ren,Zhenbiao Wang,Yuchun Zhai,Peihua Ma.Microstructural and Mechanical Properties of an Al-Cu-Sn Alloy Wall Deposited by Wire + Arc Additive Manufacturing[J].Rare Metal Materials and Engineering,2021,50(1):95~101.]
Al-Cu-Sn合金WAAM堆积体的组织与性能
投稿时间:2019-12-07  修订日期:2020-01-01
中文关键词:  Al-Cu-Sn合金,WAAM,组织,性能
基金项目:NSFC(2018yfb1106300-5)
中文摘要:
      Al-Cu合金ZL205A电弧熔丝增材制造堆积体具有良好的综合力学性能,但在增材过程中产生有毒的氧化镉。本论文以Sn替换Cd,通过金相、SEM、EDS、TEM及拉伸试验,考察堆积体的微观组织和力学性能,并与ZL205A合金堆积体进行对比。结果发现,Al-Cu-Sn合金堆积体表面平整,呈现出银白色光泽,Sn元素的烧损率为5.9%。WAAM Al-Cu-Sn合金堆积体直接堆积态晶粒细小、均匀,晶粒尺寸约为30μm,小于ZL205A合金堆积体的晶粒尺寸,主要析出相在晶内和晶界上均匀分布。T6热处理后,θ相完全固溶到Al基体中,在晶界上均匀分布着复熔T相和Sn与Al2Cu的细小共生相,TEM显示晶内弥散分布大量的θ,相。T6热处理后,Al-Cu-Sn合金的力学性能为:抗拉强度:493Mpa;屈服强度:434Mpa;延伸率:9.5%。该合金在WAAM过程中表现出了优异的性能,具有广泛的应用前景。
Microstructural and Mechanical Properties of an Al-Cu-Sn Alloy Wall Deposited by Wire + Arc Additive Manufacturing
英文关键词:Al-Cu-Sn alloy  wire + arc additive manufacturing  Microstructure  Mechanical Property
英文摘要:
      The Al-Cu alloy walls (ZL205A) produced by wire + arc additive manufacturing (WAAM) have good mechanical properties, but toxic cadmium oxide is generated during production. Therefore, to prevent the generation of cadmium oxide, we replaced the Cd in the Al-Cu alloy (ZL205A) with Sn. The microstructural and mechanical properties of the newly developed alloy with Sn and the ZL205A alloy before and after T6 heat treatment were investigated and compared by conducting metallographic, scanning electron microscopy, energy dispersive spectroscopy, transmission electron microscopy, and tensile tests. The surface of the Al-Cu-Sn alloy wall was smooth and exhibited a silver-white luster, and the burning loss rate of Sn was 5.9%. The wall of the WAAM Al-Cu-Sn alloy was fine and contained grains with a size of approximately 30 μm, which is smaller than that of the ZL205A alloy wall. The main precipitated phase was uniformly distributed among the grains or on the grain boundaries. Following T6 heat treatment, the θ phase was completely dissolved in the Al matrix, and the re-melted T phase and small co-phases of Sn and Al2Cu were uniformly distributed on the grain boundaries. The TEM results show that a large number of θ" phases were dispersed among the grains. The mechanical properties of the Al-Cu-Sn alloy after heat treatment were as follows: tensile strength – 493 MPa; yield strength – 434 MPa; elongation rate – 9.5%. The alloy shows excellent performance in WAAM process and has broad application prospects.
作者单位E-mail
王帅 东北大学 1061238079@qq.com 
顾惠敏 东北大学 guhm@smm.neu.edu.cn 
王伟 Inner Mongolia Metal Material Research Institute,Inner Mongolia  
李承德 College of Metallurgy,Northeastern University  
任玲玲 College of Metallurgy,Northeastern University  
王振颷 Fushun Dong gong Metallurgical Materials and Technology Limited Company,Fushun ,China  
翟玉春 College of Metallurgy,Northeastern University  
马培华 College of Metallurgy,Northeastern University  
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