A review of selective laser melting of aluminum alloys: Processing, microstructure, property and developing trends

被引:910
作者
Zhang, Jinliang [1 ]
Song, Bo [1 ]
Wei, Qingsong [1 ]
Bourell, Dave [2 ]
Shi, Yusheng [1 ]
机构
[1] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & & Mould Technol, Wuhan 430074, Hubei, Peoples R China
[2] Univ Texas Austin, Mech Engn Dept, Dave Bourell Lab Freeform Fabricat, Austin, TX 78712 USA
关键词
Selective laser melting; Aluminum alloy; Metallurgical defects; Mechanical properties; Heat treatment; Developing trend; 316L STAINLESS-STEEL; CRACK GROWTH-BEHAVIOR; MECHANICAL-PROPERTIES; ALSI10MG ALLOY; POWDER-BED; HEAT-TREATMENT; RESIDUAL-STRESS; SINTERING/MELTING SLS/SLM; DENSIFICATION MECHANISM; NUMERICAL-SIMULATION;
D O I
10.1016/j.jmst.2018.09.004
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Selective laser melting (SLM) is an attractive rapid prototyping technology for the fabrication of metallic components with complex structure and high performance. Aluminum alloy, one of the most pervasive structural materials, is well known for high specific strength and good corrosion resistance. But the poor laser formability of aluminum alloy restricts its application. There are problems such as limited processable materials, immature process conditions and metallurgical defects on SLM processing aluminum alloys. Some efforts have been made to solve the above problems. This paper discusses the current research status both related to the scientific understanding and technology applications. The paper begins with a brief introduction of basic concepts of aluminum alloys and technology characterization of laser selective melting. In addition, solidification theory of SLM process and formation mechanism of metallurgical defects are discussed. Then, the current research status of microstructure, properties and heat treatment of SLM processing aluminum alloys is systematically reviewed respectively. Lastly, a future outlook is given at the end of this review paper. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
引用
收藏
页码:270 / 284
页数:15
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