Architectured heterogeneous alloys with selective laser melting

被引:43
作者
Jeong, Sang Guk [1 ]
Karthik, Gangaraju Manogna [1 ]
Kim, Eun Seong [1 ]
Zargaran, Alireza [2 ]
Ahn, Soung Yeoul [1 ]
Sagong, Man Jae [1 ]
Kang, Suk Hoon [3 ]
Cho, Jung-Wook [2 ]
Kim, Hyoung Seop [1 ,2 ]
机构
[1] Pohang Univ Sci & Technol POSTECH, Dept Mat Sci & Engn, Pohang 37673, South Korea
[2] Pohang Univ Sci & Technol POSTECH, Grad Inst Ferrous & Energy Mat Technol GIFT, Pohang 37673, South Korea
[3] Korea Atom Energy Res Inst KAERI, Daejeon 34057, South Korea
基金
新加坡国家研究基金会;
关键词
Metal additive manufacturing; Laser powder-bed fusion; Architectured materials; Heterostructured materials; Austenitic stainless steels; AUSTENITIC STAINLESS-STEEL; TWINNING-INDUCED PLASTICITY; MECHANICAL-PROPERTIES; CRYSTALLOGRAPHIC TEXTURE; STRENGTH; STRATEGY; 316L; MICROSTRUCTURE; NANOSTRUCTURES; DUCTILITY;
D O I
10.1016/j.scriptamat.2021.114332
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Hetero-structuring is considered as one of the effective strengthening routes in metallic materials to real-ize excellent strength-ductility synergy. However, tailoring several microstructural features in these het-erogeneous materials is challenging. In this work, we demonstrate a new capability of selective laser melting in controlling the site-specific microstructures and developing architectured heterogeneous ma-terials. The heterostructured stainless steel samples demonstrated an excellent combination of strength and ductility compared to homogeneous materials. The current approach is versatile and can be used for many printable alloys. Further, this work opens a new direction in metal additive manufacturing to produce heterostructured materials for enhanced strength and ductility. (c) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页数:6
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