On the corrosion resistance of some selective laser melted alloys

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. che...

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Main Authors: Suryawanshi, Jyoti, Baskaran, T., Prakash, Om, Arya, S. B., Ramamurty, Upadrasta
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2021
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Online Access:https://hdl.handle.net/10356/151623
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1516232021-06-28T07:56:32Z On the corrosion resistance of some selective laser melted alloys Suryawanshi, Jyoti Baskaran, T. Prakash, Om Arya, S. B. Ramamurty, Upadrasta School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Additive Manufacturing Selective Laser Melting 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. This research work at IISc was supported by a grant from Boeing Co. (PC36035). The authors declare that there is no conflict of interest. UR acknowledges the support of his research by the Department of Science & Technology, Government of India through a JC Bose National Fellowship. 2021-06-28T07:56:32Z 2021-06-28T07:56:32Z 2018 Journal Article Suryawanshi, J., Baskaran, T., Prakash, O., Arya, S. B. & Ramamurty, U. (2018). On the corrosion resistance of some selective laser melted alloys. Materialia, 3, 153-161. https://dx.doi.org/10.1016/j.mtla.2018.08.022 2589-1529 https://hdl.handle.net/10356/151623 10.1016/j.mtla.2018.08.022 2-s2.0-85061025764 3 153 161 en Materialia © 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mechanical engineering
Additive Manufacturing
Selective Laser Melting
spellingShingle Engineering::Mechanical engineering
Additive Manufacturing
Selective Laser Melting
Suryawanshi, Jyoti
Baskaran, T.
Prakash, Om
Arya, S. B.
Ramamurty, Upadrasta
On the corrosion resistance of some selective laser melted alloys
description 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.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Suryawanshi, Jyoti
Baskaran, T.
Prakash, Om
Arya, S. B.
Ramamurty, Upadrasta
format Article
author Suryawanshi, Jyoti
Baskaran, T.
Prakash, Om
Arya, S. B.
Ramamurty, Upadrasta
author_sort Suryawanshi, Jyoti
title On the corrosion resistance of some selective laser melted alloys
title_short On the corrosion resistance of some selective laser melted alloys
title_full On the corrosion resistance of some selective laser melted alloys
title_fullStr On the corrosion resistance of some selective laser melted alloys
title_full_unstemmed On the corrosion resistance of some selective laser melted alloys
title_sort on the corrosion resistance of some selective laser melted alloys
publishDate 2021
url https://hdl.handle.net/10356/151623
_version_ 1703971252629143552