Influence of the microstructure on the degree of sensitization of a duplex stainless steel UNS S31803 aged at 650°C

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dc.contributor.authorDe Melo E.B.
dc.contributor.authorMagnabosco R.
dc.contributor.authorDe Moura Neto C.
dc.date.accessioned2019-08-20T00:17:36Z
dc.date.available2019-08-20T00:17:36Z
dc.date.issued2013
dc.description.abstractThis work evaluates the phase transformations during aging of an UNS S31803 DSS at 650°C and its influence on the DOS. The material was solution treated at 1175°C and then aged at 650°C for times up to 360 h. SEM-BSC images indicate the formation of Cr2N, σ and ÷ phases in the samples aged at 650°C. The analysis of DL-EPR curves, obtained in a 1 M H2SO4 + 0.25 M NaCl + 0.01 M KSCN solution, shows an increase in DOS values for samples aged at 650°C. Probably, this increase observed in DOS values is mainly related to the presence of Cr-and/or Mo-depleted á, as a result of σ phase, ÷ phase and/or Cr2N formation at 650°C. Moreover, a possible healing up of Cr-and/ or Mo-depleted areas is observed between 1 h and 4 h of aging at 650°C.
dc.description.firstpage1336
dc.description.issuenumber6
dc.description.lastpage1343
dc.description.volume16
dc.identifier.citationEvelin Barbosa de Mélo; R. Magnabosco; MOURA-NETO, Carlos. Influence of the microstructure on the degree of sensitization of a duplex stainless steel UNS S31803 aged at 650ºC. Materials Research (São Carlos. Impresso), v. 16, p. 1336-1343, 2013.
dc.identifier.doi10.1590/S1516-14392013005000125
dc.identifier.issn1516-1439
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/2283
dc.relation.ispartofMaterials Research
dc.rightsAcesso Aberto
dc.subject.otherlanguageDegree of sensitization
dc.subject.otherlanguageDL-EPR
dc.subject.otherlanguageDuplex stainless steel
dc.subject.otherlanguageSigma phase
dc.titleInfluence of the microstructure on the degree of sensitization of a duplex stainless steel UNS S31803 aged at 650°C
dc.typeArtigo
fei.scopus.citations16
fei.scopus.eid2-s2.0-84891805361
fei.scopus.subjectDegree of sensitization
fei.scopus.subjectDL-EPR
fei.scopus.subjectDuplex stainless steel
fei.scopus.subjectSigma phase
fei.scopus.subjectUNS S31803
fei.scopus.updated2024-03-04
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84891805361&origin=inward
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