Microstructural Evolution Due to One Thermal Cycle in a Superduplex Stainless Steel ASTM A890/A890M-Grade 6A in the As-Weld and Post-Weld Heat Treatment Conditions

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dc.contributor.authorOliveira, Clelia Ribeiro de
dc.contributor.authorMaia, Eloa Lopes
dc.contributor.authorFonseca, Solange Tamara da
dc.contributor.authorMartins, Marcelo
dc.contributor.authorAvila, Julian Arnaldo [UNESP]
dc.contributor.authorMei, Paulo Roberto
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUNISAL
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2019-10-04T12:15:37Z
dc.date.available2019-10-04T12:15:37Z
dc.date.issued2019-01-01
dc.description.abstractDuring welding of the superduplex stainless steels are exposed to thermal cycles, allowing precipitation of deleterious phases as well as unbalance as the ferrite and austenite phases. This work analyzed the microstructural changes taking place on a plate ASTM A890/A890M - grade 6A steel submitted to arc welding one welding of pass conducted on a flat surface using coated electrode Zeron (R) 100, in the as welded and post-welded heat treatment conditions. Microstructural characterization in the regions base metal, heat affected zone, and fusion zone were conducted by optical microscopy, scanning electron microscopy and X-ray diffraction. The post-weld heat treatment in the fusion zone changed the ferrite/austenite volumetric fraction from 59/41 to 52/48. Cr, Mo and Ni distributions in the fusion zone were altered after the post-weld heat treatment, with the concentration ratio ferrite/austenite being around 1.0; 1.1 and 0.9 to 1.1; 1.4 and 0.7, respectively. In addition, hardness reduced from 300 to 270 HV0.3 at the fusion zone.en
dc.description.affiliationUniv Estadual Campinas, UNICAMP, Rua Mendeleyev 200, BR-13083860 Campinas, SP, Brazil
dc.description.affiliationUNISAL, Ctr Univ Salesiano Sao Paulo, Rua Dom Bosco 100, BR-13466327 Americana, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, UNESP, BR-13876750 Sao Joao Da Boa Vista, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, BR-13876750 Sao Joao Da Boa Vista, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdCNPq: 142260/2016-9
dc.format.extent6
dc.identifierhttp://dx.doi.org/10.1590/1980-5373-MR-2019-0320
dc.identifier.citationMaterials Research-ibero-american Journal Of Materials. Sao Carlos: Univ Fed Sao Carlos, Dept Engenharia Materials, v. 22, n. 4, 6 p., 2019.
dc.identifier.doi10.1590/1980-5373-MR-2019-0320
dc.identifier.fileS1516-14392019000400215.pdf
dc.identifier.issn1516-1439
dc.identifier.scieloS1516-14392019000400215
dc.identifier.urihttp://hdl.handle.net/11449/184652
dc.identifier.wosWOS:000481992100001
dc.language.isoeng
dc.publisherUniv Fed Sao Carlos, Dept Engenharia Materials
dc.relation.ispartofMaterials Research-ibero-american Journal Of Materials
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectsuperduplex stainless steel
dc.subjectASTM A890/A890M
dc.subjectpost-weld heat treatment
dc.titleMicrostructural Evolution Due to One Thermal Cycle in a Superduplex Stainless Steel ASTM A890/A890M-Grade 6A in the As-Weld and Post-Weld Heat Treatment Conditionsen
dc.typeArtigo
dcterms.rightsHolderUniv Fed Sao Carlos, Dept Engenharia Materials

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