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Pitting corrosion of 17-4PH stainless steel manufactured by laser beam melting

Barroux, Adrien and Ducommun, Nadège and Nivet, Eric and Laffont, Lydia and Blanc, Christine Pitting corrosion of 17-4PH stainless steel manufactured by laser beam melting. (2020) Corrosion Science, 169. 108594. ISSN 0010-938X

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Official URL: https://doi.org/10.1016/J.CORSCI.2020.108594

Abstract

The pitting corrosion behaviour of a 17-4PH martensitic stainless steel (MSS) manufactured by power bed laser beam melting (LBM) was compared to that of a wrought MSS. More noble pitting potentials were measured for LBM samples, probably due to a smaller size of NbCs as compared to wrought MSS. The metastable pits were less numerous, but had a higher nucleation rate and longer life time for the LBM samples compared to the wrought MSS. This was explained by assuming a decrease in the repassivation ability of LBM samples due to small gas pores

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Centre Technique des Industries Mécaniques - CETIM (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
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Deposited On:16 Oct 2020 13:46

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