Effect of scanning speed on mechanical, corrosion, and fretting-tribocorrosion behavior of austenitic 316L stainless steel produced by laser powder bed fusion process

Uva Narayanan, C and Daniel, A and Praveenkumar, K and Manivasagam, G and Suwas, S and Prashanth, KG and Suya Prem Anand, P (2024) Effect of scanning speed on mechanical, corrosion, and fretting-tribocorrosion behavior of austenitic 316L stainless steel produced by laser powder bed fusion process. In: Journal of Manufacturing Processes, 131 . pp. 1582-1593.

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Abstract

Austenitic 316L stainless steel was fabricated using selective laser melting with three varying laser scan speeds (700 mm/s, 900 mm/s, and 1100 mm/s). Microstructural characterization was performed, and the samples were tested for mechanical, corrosion, and tribological tests. The samples show the presence of an austenitic phase with fiber texture along the build direction. A higher relative density of �98.6 was observed for the sample fabricated at a scan speed of 700 mm/s, and the density decreases with increasing scanning speed. The sample fabricated with a low scan speed shows the presence of fine grains, and the grain size increases with increasing laser scan speed hence, a high tensile strength of 837 ± 4 MPa is achieved. In addition, the sample fabricated with low scanning speed offers enhanced tribological resistance and sustained passive layer behavior in corrosion and fretting-tribocorrosion tests offering the best possible combination of properties. © 2024 The Society of Manufacturing Engineers

Item Type:	Journal Article
Publication:	Journal of Manufacturing Processes
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to the publishers.
Keywords:	Austenite; Austenitic stainless steel; Bulk Density; Corrosion resistance; Corrosive effects; Fretting corrosion; Laser applications; Selective laser melting; Steel corrosion; Steel powder metallurgy, 316 L stainless steel; Austenitic; Austenitic stainless; Laser scan speed; Mechanical; Scan speed; Scanning speed; Selective laser melting; Tribo-corrosion; Tribocorrosion behavior, Tensile strength
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	30 Oct 2024 05:23
Last Modified:	30 Oct 2024 05:23
URI:	http://eprints.iisc.ac.in/id/eprint/86583

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