On the corrosion resistance of some selective laser melted alloys

Suryawanshi, J and Baskaran, T and Prakash, O and Arya, SB and Ramamurty, U (2018) On the corrosion resistance of some selective laser melted alloys. In: Materialia, 3 . pp. 153-161.

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Abstract

The electrochemical corrosion resistances of selective laser melted (SLM) 316 L austenitic stainless steel (SS), 18(Ni) 300-grade maraging steel (MS), and Al-12 wt. Si (AS) alloy in a 0.1 M NaCl solution at room temperature were evaluated. The effects of laser scanning strategy (single melt vs. checker board styles), post-SLM heat treatment, and corroding surface orientation (with respect to the scan and build directions) on the corrosion behavior were examined. In all cases, results were compared with those obtained on samples with the same compositions, but manufactured using conventional means. The experimental results show that, for the particular set of experimental conditions employed in this study, SLM in general improves the corrosion resistances of Al-12 wt. Si and stainless steel alloys and degrades the corrosion resistance of the maraging steel, in comparison to the respective corrosion resistances of their conventionally manufactured counterparts. These results are discussed in terms of microstructural refinement and porosity that are common to the SLM alloys.

Item Type:	Journal Article
Publication:	Materialia
Publisher:	Elsevier B.V.
Additional Information:	The copyright for this article belongs to the Acta Materialia Inc.
Keywords:	3D printers; Alloy steel; Aluminum coated steel; Aluminum corrosion; Corrosion; Corrosion resistance; Corrosion resistant alloys; Corrosive effects; Electrochemical corrosion; Maraging steel; Porosity; Selective laser melting; Silicon alloys; Silicon steel; Sodium alloys; Sodium chloride; Stainless steel; Steel corrosion, Build direction; Corrosion behavior; Experimental conditions; Laser scanning; Microstructural refinement; NaCl solution; Surface orientation, Austenitic stainless steel
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	02 Aug 2022 12:01
Last Modified:	02 Aug 2022 12:01
URI:	https://eprints.iisc.ac.in/id/eprint/75174

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