On the corrosion and metastable pitting characteristics of 316L stainless steel produced by selective laser melting

By G. Sander, Sebastian Thomas, V. Cruz, M. Jurg, Nick Birbilis, X. Gao, M. Brameld, Christopher Hutchinson. 2017

327 citations recorded by the source corpus.

The austenitic stainless steel 316L was additively manufactured using Selective Laser Melting (SLM). The corrosion characteristics of the additively manufactured (3D printed) specimens were investigated by both potentiodynamic and potentiostatic techniques. The production parameters were deliberately varied during SLM, to produce 316L specimens fabricated by different laser scan speed (in the range of 860–1160 mm/s) and laser power (in the range of 165–285 W). The fabrication parameters were found to influence the porosity of the resulting specimens. The pitting potentials, metastable pitting rates and repassivation potentials of the 3D printed specimens are presented herein as a function of the laser scan speed and laser power, and also discussed in the context of specimen porosity. The corrosion characteristics of the 3D printed 316L were also compared with wrought 316L, revealing higher pitting potentials and lower rates of metastable pitting for most SLM 316L specimens, the related concepts of which are discussed herein. © The Author(s) 2017. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reuse, distribution, and reproduction in any medium, provided the original work is not changed in any way and is properly cited. For permission for commercial reuse, please email: oa@electrochem.org. [DOI: 10.1149/2.0551706jes] All rights reserved.

Subfields: Automotive Engineering, Materials Chemistry, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/a2c57fd3b11acee060230445c62c3d20571595b7

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Citations in the corpus

Review of Powder Bed Fusion Additive Manufacturing for Metals (2021, background): “PBF-AM-built steel parts with higher porosity and thus lower density exhibited lower corrosion resistance than wrought parts [249,258].”
Corrosion performance of additively manufactured stainless steel parts: A review (2020, methodology): “methods of AM and are too small to initiate pitting corrosion in AM samples [9,206,207,211].”
Microstructure and mechanical properties of 316L austenitic stainless steel processed by different SLM devices (2020, result): “Reference 316L cast [36] 190–200 365 ± 22 563 ± 6 46.”
Additive manufacturing of steels: a review of achievements and challenges (2020, background): “In this respect, AM has been shown to be capable of producing austenitic stainless steels with excellent pitting corrosion resistance [62, 63], as presented in Fig.”
Steels in additive manufacturing: A review of their microstructure and properties (2020, background): “The Cr-depleted zone around MnS inclusions is known to be a pit nucleation site, and thus the better resistance to pit initiation in L-PBF material can be attributed to small or non-existent MnS inclusions [50,55].”