Exploring failure modes of alumina scales on FeCrAl and FeNiCrAl alloys in a nitriding environment

dc.contributor.authorMortazavi, A.N.
dc.contributor.authorEsmaily, M
dc.contributor.authorGeers, C
dc.contributor.authorBirbilis, Nick
dc.contributor.authorSvensson, Jan-Erik
dc.contributor.authorHalvarsson, M
dc.contributor.authorChandrasekaran, D
dc.contributor.authorJohansson, L.G.
dc.date.accessioned2023-03-15T01:03:14Z
dc.date.available2023-03-15T01:03:14Z
dc.date.issued2020
dc.date.updated2022-01-09T07:17:44Z
dc.description.abstractTwo high-temperature FeCrAl and FeNiCrAl alloys were exposed in a strongly nitriding environment at 900C and the morphology of nitridation was studied. Quasi-in-situ experiments revealed that nitridation started at specific surface sites directly related to the alloy microstructure where the alumina scale was permeable to nitrogen. FeCrAl alloy grains with (112) orientation formed outward-growing alumina scales and were susceptible to nitridation. Outward-growing scales and substrate nitridation was also observed at chromium carbide precipitates in the FeNiCrAl alloy. Both alloys suffered nitridation at reactive element-rich (Y and Zr) inclusions larger than a certain critical size. The latter type of attack is caused by cracks and pores in the scale. The findings open new avenues of research for developing the next generation of high temperature alloys with superior propertiesen_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn1359-6454en_AU
dc.identifier.urihttp://hdl.handle.net/1885/287066
dc.language.isoen_AUen_AU
dc.provenanceThis is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)en_AU
dc.publisherPergamon Pressen_AU
dc.rights© 2020 The Authors. Published by Elsevier Ltd on behalf of Acta Materialia Inc.en_AU
dc.rights.licenseCreative Commons Attribution-NonCommercial-NoDerivs Licenseen_AU
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en_AU
dc.sourceActa Materialiaen_AU
dc.subjectHigh temperature oxidationen_AU
dc.subjectNitridationAlumina scale failureen_AU
dc.subjectCrystallographic orientationen_AU
dc.subjectReactive elementsen_AU
dc.titleExploring failure modes of alumina scales on FeCrAl and FeNiCrAl alloys in a nitriding environmenten_AU
dc.typeJournal articleen_AU
dcterms.accessRightsOpen Accessen_AU
local.bibliographicCitation.lastpage146en_AU
local.bibliographicCitation.startpage131en_AU
local.contributor.affiliationMortazavi, A.N. , Harvard Universityen_AU
local.contributor.affiliationEsmaily, M, Massachusetts Institute of Technologyen_AU
local.contributor.affiliationGeers , C, Chalmers University of Technologyen_AU
local.contributor.affiliationBirbilis, Nick, College of Engineering and Computer Science, ANUen_AU
local.contributor.affiliationSvensson, Jan-Erik, Chalmers University of Technologyen_AU
local.contributor.affiliationHalvarsson, M, Chalmers University of Technologyen_AU
local.contributor.affiliationChandrasekaran, D, Kanthal ABen_AU
local.contributor.affiliationJohansson, L.G. , Chalmers University of Technologyen_AU
local.contributor.authoremailu1066695@anu.edu.auen_AU
local.contributor.authoruidBirbilis, Nick, u1066695en_AU
local.description.notesImported from ARIESen_AU
local.identifier.absfor401600 - Materials engineeringen_AU
local.identifier.ariespublicationa383154xPUB14822en_AU
local.identifier.citationvolume201en_AU
local.identifier.doi10.1016/j.actamat.2020.09.058en_AU
local.identifier.scopusID2-s2.0-85092306899
local.identifier.uidSubmittedBya383154en_AU
local.publisher.urlhttps://www.elsevier.com/en-auen_AU
local.type.statusPublished Versionen_AU

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