Control of texture and microstructure in additive manufacturing of stainless steel 316 L

Kumar, D and Shankar, G and Prashanth, KG and Suwas, S (2024) Control of texture and microstructure in additive manufacturing of stainless steel 316 L. In: Journal of Alloys and Compounds, 976 (976).

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Abstract

This investigation deals with exploring the effect of rotation scan strategy on microstructural evolution and hence mechanical behaviour of 316 L stainless steel prepared by additive manufacturing using selective laser melting technique. Higher anisotropy has been observed for samples where no hatch rotation was employed compared to the samples where a hatch rotation was involved during printing. The morphology of grains gets perturbed for samples prepared by hatch rotation 60� and hatch rot 74� when compared to the samples prepared using no hatch rotation or a hatch rotation of 90�. The crystallographic texture component of the sample consists of a combination of < 100 > and < 110 > orientation (// building direction) except for the hatch rot 60� sample where the texture comprises of only < 110 >. It has been noticed that texture control is possible through giving a rotation such as 60� or 90�. The samples prepared without any hatch rotation exhibited higher strain hardening due to combined action of slip and twin activity when compared to hatch rot 60� sample where < 110 > texture reduces the deformation mechanism to slip only. This study paves a new pathway to control the mechanical properties by tuning the appropriate texture along the BD. © 2023 Elsevier B.V.

Item Type:	Journal Article
Publication:	Journal of Alloys and Compounds
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to publisher
Keywords:	Additives; Austenitic stainless steel; Hatches; Morphology; Rotation; Selective laser melting; Strain hardening, 316 L; 316 L stainless steel; Effects of rotation; Hatch rotation; Mechanical behavior; Scan strategy; Selective laser melting; SLM; Stainless steel 316; Texture and microstructures, Textures
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	01 Mar 2024 06:23
Last Modified:	01 Mar 2024 06:23
URI:	https://eprints.iisc.ac.in/id/eprint/83885

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