Mechanistic understanding of the localized corrosion behavior of laser powder bed fused 316L stainless steel in pressurized water reactor primary water

Simple item page
creativework.keywordsAustenitic stainless steel, Cellular structure, High-temperature water, Laser powder bed fusion, Localized corrosion
creativework.publisherActa Materialia Incen
dc.contributor.authorGe Y.
dc.contributor.authorChang L.
dc.contributor.authorBojinov M.
dc.contributor.authorSaario T.
dc.contributor.authorQue Z.
dc.date.accessioned2024-07-10T14:27:06Z
dc.date.accessioned2024-07-10T14:51:03Z
dc.date.available2024-07-10T14:27:06Z
dc.date.available2024-07-10T14:51:03Z
dc.date.issued2024-01-01
dc.description.abstractThe laser powder bed fused (LPBFed) stainless steels showed anomalous and localized corrosion behavior in the nuclear reactor high-temperature water compared to their wrought counterparts, which affects their performance during plant operation. In this study, advanced microstructural characterization was performed on LPBFed 316 L sample along with wrought 316 L sample after corrosion tests to understand the underlying mechanisms. The results showed that an inhomogeneous/discontinuous inner oxide layer formed on LPBFed 316 L, in contrast to the continuous inner oxide layer on the wrought 316 L specimen. This discontinuous inner oxide layer was identified to consist of Cr-enriched nano-sized spinel oxide and the barrier layer features a Ni-enriched hexagonal close-packed Laves phase. Localized/preferential oxidation was found to occur along the cellular walls which were tangled with high density dislocations and decorated with Mn and Si-enriched nano-sized precipitates, and the nano-precipitates were observed in the core of dispersed Cr-enriched inner oxide crystals.
dc.identifier.doi10.1016/j.scriptamat.2023.115764
dc.identifier.issn1359-6462
dc.identifier.scopusSCOPUS_ID:85171425069en
dc.identifier.urihttps://rlib.uctm.edu/handle/123456789/865
dc.language.isoen
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85171425069&origin=inward
dc.titleMechanistic understanding of the localized corrosion behavior of laser powder bed fused 316L stainless steel in pressurized water reactor primary water
dc.typeArticle
oaire.citation.volume238
Files
Collections
Articles