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

Karl A. Sofinowski; Sudharshan Raman; Xiaogang Wang; Bernard Gaskey; Matteo Seita
Nanyang Technological University; Nanyang Technological University; Nanyang Technological University; Nanyang Technological University; Nanyang Technological University
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Publisher: Elsevier
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Abstract AITranslate

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. Graphical Download : Download high-res image (785KB) Download : Download full-size image

KeyWords AITranslate

Selective laser melting Sitespecific microstructure control Stainless steel 316L Solidification microstructure Grain orientation engineering Texture control
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Basic Information:

DOI：https://doi.org/10.1016/j.addma.2020.101809

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Citation Information:

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. Graphical Download : Download high-res image (785KB) Download : Download full-size image

quote

GB/T 7714-2015 [1] Karl A. Sofinowski, Sudharshan Raman, Xiaogang Wang, et al. Additive Manufacturing, 2021(38). DOI:10.1016/j.addma.2020.101809.
MLA [1] Karl A. Sofinowski, et al., Additive Manufacturing, no. 38, 2021, https://doi.org/10.1016/j.addma.2020.101809.
APA [1] Karl A. Sofinowski, Sudharshan Raman, Xiaogang Wang, Bernard Gaskey, & Matteo Seita. (2021). Additive Manufacturing(38). https://doi.org/10.1016/j.addma.2020.101809
IEEE [1] Karl A. Sofinowski, Sudharshan Raman, Xiaogang Wang, Bernard Gaskey, and Matteo Seita, Additive Manufacturing, no. 38, 2021, doi: 10.1016/j.addma.2020.101809. keywords: {Selective laser melting;Sitespecific microstructure control;Stainless steel 316L;Solidification microstructure;Grain orientation engineering;Texture control}