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激光选区熔化水雾化Cu-10Sn合金粉末成形件的微观组织结构及力学性能研究

Microstructure and Mechanical Properties of Water Atomized Cu-10Sn Alloy Powder Formed Parts by Selective Laser Melting

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摘要

为降低3D打印铜合金的生产成本, 采用水雾化法制备的Cu-10Sn合金粉末作为原材料,进行激光选区熔化(SLM)试验。通过优化打印工艺参数获得几乎全致密的Cu-10Sn合金块体, 其相对密度达99.7%。制备的Cu-10Sn合金主要由金属间化合物Cu41Sn11及α-Cu固溶体两相组成, 其晶粒形态主要为沿凝固方向形成的柱状树枝晶和枝晶间相, 并且在晶内分布有高密度位错。在准静态拉伸条件下, 其屈服强度为(392±6) MPa, 抗拉强度为(749±5) MPa, 塑性变形量为29%±2.3%, 综合力学性能远高于铸态 Cu-10Sn合金。

Abstract

In order to reduce the production cost of copper alloy 3D printing, we use the Cu-10Sn alloy powder prepared by water atomization as raw material for laser selective melting (SLM) experiment, in order to obtain an almost completely dense Cu-10Sn alloy bulk sample by optimizing the SLM processing parameters. The relative density of the sample could be reached to 99.7%. The sample consists of two phases of intermetallic compound Cu41Sn11 and α-Cu solid solution. The grain morphology is mainly the columnar dendrite and interdendritic phases formed along the solidification direction, and high density dislocations are distributed within the crystals. Under the quasi-static tensile condition, the yield strength of the specimen is (392±6) MPa, the tensile strength is (749±5) MPa, and the plastic deformation is 29%±2.3%. The comprehensive mechanical properties are much higher than those of Cu-10Sn alloys prepared by casting methods.

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中图分类号:TB31

DOI:10.3788/cjl201845.1002009

所属栏目:激光制造

基金项目:北京市朝阳区科委2017年度协同创新项目(CYXC1701)、先进输电国家重点实验室开放基金(GEIRI-SKL-2017-008)、北京市朝阳区博士后基金(2017ZZ-01-18)

收稿日期:2018-04-19

修改稿日期:2018-05-28

网络出版日期:2018-06-14

作者单位    点击查看

张晓雅:北京工业大学激光工程研究院, 北京 100124
李现兵:全球能源互联网研究院有限公司, 北京 102200
谈震:北京工业大学材料科学与工程学院, 北京 100124
曾勇:北京工业大学激光工程研究院, 北京 100124
田丽纷:全球能源互联网研究院有限公司, 北京 102200
周正:北京工业大学材料科学与工程学院, 北京 100124
周振鲁:北京工业大学材料科学与工程学院, 北京 100124
贺定勇:北京工业大学材料科学与工程学院, 北京 100124

联系人作者:贺定勇(dyhe@bjut.edu.cn); 张晓雅(773473848@qq.com);

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引用该论文

Zhang Xiaoya,Li Xianbing,Tan Zhen,Zeng Yong,Tian Lifen,Zhou Zheng,Zhou Zhenlu,He Dingyong. Microstructure and Mechanical Properties of Water Atomized Cu-10Sn Alloy Powder Formed Parts by Selective Laser Melting[J]. Chinese Journal of Lasers, 2018, 45(10): 1002009

张晓雅,李现兵,谈震,曾勇,田丽纷,周正,周振鲁,贺定勇. 激光选区熔化水雾化Cu-10Sn合金粉末成形件的微观组织结构及力学性能研究[J]. 中国激光, 2018, 45(10): 1002009

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