Layer-wise engineering of grain orientation (LEGO) in laser powder bed fusion of stainless steel 316L

被引：108

作者：

Sofinowski, Karl A. ^{[1
]}

Raman, Sudharshan ^{[1
,2
]}

Wang, Xiaogang ^{[1
]}

Gaskey, Bernard ^{[1
]}

Seita, Matteo ^{[1
,2
,3
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore, Singapore

[2] Nanyang Technol Univ, Singapore Ctr 3D Printing, Singapore, Singapore

[3] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore, Singapore

来源：

ADDITIVE MANUFACTURING | 2021年 / 38卷

基金：

新加坡国家研究基金会;

关键词：

Selective laser melting; Site-specific microstructure control; Stainless steel 316L; Solidification microstructure; Grain orientation engineering; Texture control;

D O I：

10.1016/j.addma.2020.101809

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Additive manufacturing (AM) has opened new possibilities for site-specific microstructure control of metal alloys. In laser powder bed fusion (LPBF) AM, the microstructure can be locally tailored by manipulating the solidification conditions point to point. In this work, we demonstrate this capability by varying the laser scanning angle during LPBF to produce stainless steel samples with controlled crystallographic textures. The resulting microstructures range from strongly textured blocks of arbitrary thickness and shape to gradient crystallographic textures. This strategy paves the way to a new generation of additively manufactured metals with optimized, site-specific properties to suit a wide range of applications.

引用

页数：12

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