Microstructural study on a Fe-10Cu alloy fabricated by selective laser melting for defect-free process optimization based on the energy density

被引：27

作者：

Kim, Won Rae ^{[1
]}

Bang, Gyung Bae ^{[1
,2
]}

Park, Jung Hyun ^{[1
,2
]}

Lee, Taeg Woo ^{[1
]}

Lee, Byoung-Soo ^{[1
]}

Yang, Seung-Min ^{[1
]}

Kim, Gun-Hee ^{[1
]}

Lee, Kwangchoon ^{[3
]}

Kim, Hyung Giun ^{[1
]}

机构：

[1] Korea Inst Ind Technol, Funct Mat & Components R&D Grp, Kangnung 25440, South Korea

[2] Inha Univ, Dept Mat Sci & Engn, Incheon 22212, South Korea

[3] MTA Co Ltd, Goesan 28023, South Korea

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2020年 / 9卷 / 06期

关键词：

Selective laser melting; Fe-10Cu alloy; High density; Defect; Energy density; SENSITIVE PLASTIC MATERIALS; BERYLLIUM-COPPER ALLOY; ELECTRICAL-CONDUCTIVITY; STRENGTH; BEHAVIOR; PERFORMANCE; FAILURE; AG;

D O I：

10.1016/j.jmrt.2020.09.051

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Process optimization for the selective laser melting (SLM) of the Fe-10Cu alloy was performed to obtain defect-free parts based on the energy density for thermodynamically complete melting. A microstructural study was conducted for the corresponding energy densities that focused on identifying defect formation mechanisms. A range of defects formed via by diverse mechanisms, such as lack of fusion, balling, shrinkage and the key-hole effect, were characterized, including mixed zones. The process range in which these defects were not formed could be suggested as the optimal conditions for SLM of the Fe-10Cu alloy. In this study, a laser power below 320 W, a scan speed below 1523 mm/s and an energy density under 15.56 J/mm3 were indicated to be the optimum process conditions for SLM of Fe-10Cu alloy to avoid micro-cracks from shrinkage, balling and rounded pores from the key-hole phenomenon. (C) 2020 The Author(s). Published by Elsevier B.V.

引用

页码：12834 / 12839

页数：6

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