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主管单位 中华人民共和国
工业和信息化部
主办单位 中国材料研究学会
哈尔滨工业大学
主编 苑世剑 国际刊号ISSN 1005-0299 国内刊号CN 23-1345/TB

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引用本文:李晓丹,朱庆丰,孔淑萍,康延磊,王向杰,倪家强.3D打印AlSi10Mg合金组织性能研究[J].材料科学与工艺,2019,27(2):16-21.DOI:10.11951/j.issn.1005-0299.20180138.
LI Xiaodan,ZHU Qingfeng,KONG Shuping,KANG Yanlei,WANG Xiangjie,NI Jiaqiang.Study on the structure and properties of the AlSi10Mg samples produced by 3D printing[J].Materials Science and Technology,2019,27(2):16-21.DOI:10.11951/j.issn.1005-0299.20180138.
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3D打印AlSi10Mg合金组织性能研究
李晓丹1, 朱庆丰2,3,孔淑萍2,3,康延磊2,3,王向杰2,3,倪家强1
(1. 中航工业沈阳飞机工业(集团)有限公司,沈阳 110034;2.材料电磁过程研究教育部重点实验室(东北大学),沈阳 110004;3.东北大学 材料科学与工程学院,沈阳 110004)
摘要:
D打印技术(3D printing)是20世纪90年代出现的一种新型快速成型技术,为提升我国与该技术相关的扫描路径、扫描宽度和扫描深度等关键参数的控制水平,本文利用金相显微镜和扫描电镜分析了用进口EOSM280金属粉末激光烧结系统制备的AlSi10Mg合金制品的组织,并检测了制品的力学性能。结果表明:3D打印试样平行构建方向形成典型的鱼鳞状组织,这些鱼鳞状组织是激光扫描熔池凝固后形成的;组织分析结果表明,扫描形成熔池深度约为180 μm,扫描间距约为210 μm,层与层间的扫描方向互成120°;凝固熔池内形成了典型的柱状晶,其生长方向与传热方向平行;柱状晶内的共晶组织呈“管状”,Si颗粒尺寸细小均匀;平行于构建方向样品的抗拉强度和延伸率分别为487.5 MPa和9.0%,垂直于构建方向样品的抗拉强度和延伸率分别为490.0 MPa和7.0%.
关键词:  3D打印  AlSi10Mg  抗拉强度  微观组织  激光熔覆
DOI:10.11951/j.issn.1005-0299.20180138
分类号:TG146.2
文献标识码:A
基金项目:辽宁省自然科学基金资助项目(2015022003);国家自然科学基金资助项目(3,7).
Study on the structure and properties of the AlSi10Mg samples produced by 3D printing
LI Xiaodan1, ZHU Qingfeng2,3, KONG Shuping2,3, KANG Yanlei2,3, WANG Xiangjie2,3, NI Jiaqiang1
(1.AVIC Shenyang Aircraft, Shenyang 110034, China;2. Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education (Northeastern University),Shenyang 110004, China;3.School of Materials Science and Engineering ,Northeastern University,Shenyang 110004, China) [HJ0.95mm]
Abstract:
D printing technology is a new rapid prototyping technology which appeared in 1990s. The key parameters (such as scanning path,scanning depth and scanning width) of this technology are mastered by Euro-American countries. The 3D printing technology level still needs to be improved in China. In order to reveal the features of the 3D printing technology, the AlSi10Mg alloy samples were produced by the metallic selective laser melting system (EOSM280) provided by the EOS Company. The structure and mechanical properties of the samples were investigated. The results show that the fish scale like structures which formed on the side along the building direction during laser scanning actually are the solidification molten pool. The morphology of the solidification pool at the top of the sample show that the depth of the molten pool of each laser scanning is about 180 μm, the laser beam spacing on the horizontal direction is 210 μm, and the included angle of scanning direction between adjacent layer is about 120°. The columnar grains are formed in the solidification molten pool, and the growth direction of the columnar grains is parallel to the heat transfer direction. Tubular shape eutectic structures distribute in the columnar grains, and the Si particles on the dendrite arms are very fine and uniform. There is no major influence for the build orientation on the tensile properties. The tensile strength and the elongation of the sample in the building direction are 487.5 MPa and 9.0% respectively. And the tensile strength and the elongation of the sample vertical to building direction are 490 MPa and 7.0 % respectively.
Key words:  3D printing  AlSi10Mg  tensile strength  microstructure  laser cladding

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