{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,4]],"date-time":"2026-07-04T16:28:20Z","timestamp":1783182500932,"version":"3.54.6"},"reference-count":65,"publisher":"MDPI AG","issue":"20","license":[{"start":{"date-parts":[[2022,10,13]],"date-time":"2022-10-13T00:00:00Z","timestamp":1665619200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Association Nationale pour la Recherche et la Technologie (ANRT)"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Materials produced by additive manufacturing (AM) often have different microstructures from those obtained using conventional metallurgy (CM), which can have significant impacts on the materials\u2019 durability, and in particular, resistance to corrosion. In this study, we were concerned with the susceptibility to pitting and environmentally assisted cracking (EAC) of 17-4PH martensitic stainless steel (MSS). We focused on the evolution from pitting to EAC, and the behaviour of MSS produced by AM was compared with that of its CM counterpart. Potentiodynamic polarisation tests were combined with chronoamperometry measurements performed without and with mechanical loading to study both stable and metastable pitting and the influence of stress on these processes. EAC tests were carried out and combined with observations of fracture surfaces. MSS produced by AM was more resistant to pit initiation due to fewer and finer NbC particles. However, the propagation kinetics of stable pits were higher for this MSS due to a higher amount of reversed austenite. The stress was found to stabilise the metastable pits and to accelerate the propagation of stable pits, which resulted in an increased susceptibility to EAC of the MSS produced by AM. These results clearly highlighted the fact that the reversed austenite amount has to be perfectly controlled in AM processes.<\/jats:p>","DOI":"10.3390\/ma15207121","type":"journal-article","created":{"date-parts":[[2022,10,13]],"date-time":"2022-10-13T22:21:11Z","timestamp":1665699671000},"page":"7121","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Susceptibility to Pitting and Environmentally Assisted Cracking of 17-4PH Martensitic Stainless Steel Produced by Laser Beam Melting"],"prefix":"10.3390","volume":"15","author":[{"given":"Nizar","family":"Guennouni","sequence":"first","affiliation":[{"name":"CIRIMAT, Universit\u00e9 de Toulouse, CNRS, INP-ENSIACET 4 all\u00e9e Emile Monso, CS 44362, CEDEX 4, 31030 Toulouse, France"},{"name":"P\u00f4le MMS, CETIM, 7 rue de la Presse, 42000 Saint-Etienne, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0666-5532","authenticated-orcid":false,"given":"Daniel","family":"Maisonnette","sequence":"additional","affiliation":[{"name":"P\u00f4le MMS, CETIM, 7 rue de la Presse, 42000 Saint-Etienne, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0996-5584","authenticated-orcid":false,"given":"Christophe","family":"Grosjean","sequence":"additional","affiliation":[{"name":"P\u00f4le MMS, CETIM, 7 rue de la Presse, 42000 Saint-Etienne, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5006-1958","authenticated-orcid":false,"given":"Dominique","family":"Poquillon","sequence":"additional","affiliation":[{"name":"CIRIMAT, Universit\u00e9 de Toulouse, CNRS, INP-ENSIACET 4 all\u00e9e Emile Monso, CS 44362, CEDEX 4, 31030 Toulouse, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christine","family":"Blanc","sequence":"additional","affiliation":[{"name":"CIRIMAT, Universit\u00e9 de Toulouse, CNRS, INP-ENSIACET 4 all\u00e9e Emile Monso, CS 44362, CEDEX 4, 31030 Toulouse, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,10,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2485","DOI":"10.1016\/S0167-577X(02)01298-3","article-title":"Hydrogen susceptibility of 17-4 PH stainless steel","volume":"57","author":"Chiang","year":"2003","journal-title":"Mater. 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