A Review of Emerging Metallic System for High-Energy Beam Additive Manufacturing: Al–Co–Cr–Fe–Ni High Entropy Alloys

查看全文 作　　者：Yinuo [1,2]Guo;Haijun [1,2]Su;Peixin [1,2]Yang;Yong [2]Zhao;Zhonglin [1,2]Shen;Yuan [2]Liu;Di [2]Zhao;Hao [2]Jiang;Jun [2]Zhang;Lin [2]Liu;Hengzhi [2]Fu

机构地区：[1]Research&Development Institute of Northwestern Polytechnical University in Shenzhen,Shenzhen,518057,China;[2]State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi’an,710072,China

出　　处：《Acta Metallurgica Sinica(English Letters)》索引2022年第35卷第9期,共17页

基　　金：financially supported by the Guangdong Basic and Applied Basic Research Foundation(No.2021B1515120028);the National Natural Science Foundation of China(Nos.52130204,52174376,51822405);the Science and Technology Innovation Team Plan of Shann Xi Province(No.2021TD-17);the Youth Innovation Team of Shaanxi Universities,Joint Research Funds of the Department of Science&Technology of Shaanxi Province and NPU(No.2020GXLH-Z-024);the Key R&D Program of ShaanXi Province(No.2019ZDLGY 04-04);the Fundamental Research Funds for the Central Universities(No.D5000210902);the Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University(Nos.CX2021056 and CX2021066)。 摘　　要：Al–Co–Cr–Fe–Ni high entropy alloy(HEA) system is a newly developed category of metallic materials possessing unique microstructure, mechanical and functional properties, which presents many promising industrial applications. In recent years, additive manufacturing technology has given rise to a great potential for fabricating HEA parts of ultra-fine grains and geometrical complexity, thereby attracting great interest of researchers. Herein, a comprehensive review emphasizes on the recent developments in high-energy beam additive manufacturing of Al–Co–Cr–Fe–Ni HEA, in the aspects of their printing processes, microstructures, properties, defects, and post treatments. The technical characteristics of three typical high-energy beam additive manufacturing technologies for printing HEA, namely, selective laser melting(SLM), selective electron beam melting(SEBM), and directed energy deposition(DED) are systematically summarized. Typical crystal structure, grain, microstructure, as well as corresponding properties of Al–Co–Cr–Fe–Ni HEA manufactured by those technologies are primarily presented and discussed. It also elaborates the formation mechanisms of harmful defects related to the rapid solidification and complex thermal cycle during high-energy beam additive manufacturing. Furthermore, several kinds of post treatments with an aim to improve performance of HEA are illustrated. Finally, future research directions for HEA by additive manufacturing are outlined to tackle current challenges and accelerate their applications in industrial fields. 关键词：High entropy alloy Additive manufacturing MICROSTRUCTURES Properties DEFECTS Post treatments

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A Review of Emerging Metallic System for High-Energy Beam Additive Manufacturing: Al–Co–Cr–Fe–Ni High Entropy Alloys

参考文献(102)

引证文献(3)

耦合文献(7)

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