Journal
SCRIPTA MATERIALIA
Volume 141, Issue -, Pages 94-98Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2017.07.037
Keywords
Stainless steel; Sulphide inclusions; Additive manufacturing; Selective laser melting; Pitting corrosion
Categories
Funding
- Deakin Advanced Characterization Facility
- Australian Research Council through the ARC Industry Transformation Research Hub for Transforming Australia's Manufacturing Industry through High Value Additive Manufacturing [IH130100008]
- Woodside Energy
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Corrosion of stainless steels, including the austenitic Fe-Cr-Ni alloys, is associated with MnS inclusions that provide local sites for corrosion pits. Much research effort has been focused on the role ofMnS in corrosion of conventional (cast and wrought) stainless steel to date, including microanalysis of MnS and the surrounding microchemistry. Herein, it was elucidated that an austenitic stainless steel (type 316L) when manufactured through selective laser melting was able to be produced without MnS inclusions and hence with no accompanying Cr-depletion in the vicinity of MnS, resulting in superior corrosion resistance relative to wrought form. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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