Pit morphology and its microstructure relation in 850°C aged UNS S31803 (SAP 2205) duplex stainless steel

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dc.contributor.advisorOrcidhttps://orcid.org/0000-0003-0559-7224
dc.contributor.authorRodrigo Magnabosco
dc.contributor.authorALONSO-FALLEIROS, N.
dc.date.accessioned2023-08-26T23:51:01Z
dc.date.available2023-08-26T23:51:01Z
dc.date.issued2003-07-24
dc.description.abstractThis work described the relationship between microstructure of UNS S 31803 (SAP 2205) aged at 850°C and pitting morphology after cyclic polarization in chloride aqueous solution. The initial material, solution treated for 30 minutes at 1120°C and water quenched, was aged at 850°C for periods up to 100 hours. Cyclic polarization in 3,5% NaCl aqueous solution was conducted on #600 grounded sample surfaces. After polarization, the samples were sectioned transversal and perpendicular to polarized surface to allow the inner view of pitting corrosion using scanning electron microscope. It was found that sigma phase formation after 850°C aging treatment reduced pitting potential, and pitting corrosion occurred as selective corrosion of chromium and molybdenum impoverished regions, like interfaces between sigma phase and metallic matrix.
dc.description.firstpage324
dc.description.lastpage332
dc.identifier.citationMAGNABOSCO, R.; ALONSO-FALLEIROS, N. Pit morphology and its microstructure relation in 850°C aged UNS S31803 (SAP 2205) duplex stainless steel. Associação Brasileira de Metalurgia e Materiais, p. 324-332, jul, 2003.
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/5072
dc.relation.ispartof58th Congresso Anual da ABM (ASSociacao Brasileira de Metalurgia e Materiais)
dc.rightsAcesso Restrito
dc.subject.otherlanguageDuplex stainless steel
dc.subject.otherlanguageMicrostructure
dc.subject.otherlanguagePitting corrosion
dc.titlePit morphology and its microstructure relation in 850°C aged UNS S31803 (SAP 2205) duplex stainless steel
dc.title.alternativeMorfologia de pite em aço inoxidável dúplex UNS 831803 (SAF 2205) envelhecido a 850°C e relação com microestrutura
dc.typeArtigo de evento
fei.scopus.citations1
fei.scopus.eid2-s2.0-1842455052
fei.scopus.subjectDuplex stainless steel
fei.scopus.subjectPitting corrosion
fei.scopus.updated2024-07-01
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=1842455052&origin=inward
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