Second Phase Precipitation in Ultrafine-grained Ferrite Steel

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dc.contributor.authorGallego, Juno [UNESP]
dc.contributor.authorRodrigues, Alessandro Roger
dc.contributor.authorFazolo de Assis, Cleiton Lazaro
dc.contributor.authorMontanari, Luciana
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-12-03T13:11:50Z
dc.date.available2014-12-03T13:11:50Z
dc.date.issued2014-03-01
dc.description.abstractGrain size refinement is one of the most efficient strengthening mechanisms applied to modern High-Strength Low-Alloy steels (HSLA) because yield strength and toughness are both improved. This paper discusses the distribution of carbides by using transmission electron microscopy (TEM) in a low-carbon steel with ultrafine grained (UFG) ferrite. Fine cementite particles were formed during water quenching due to the auto-tempering of highly distorted martensite. Other fine particles observed under the same condition were nucleated due to the presence of carbide formers such as niobium, titanium and vanadium. TEM analysis showed that cementite particles underwent Ostwald ripening during warm rolling but they were still able to inhibit ferrite grain growth, which was maintained 1 mu m size approximately.en
dc.description.affiliationSao Paulo State Univ, UNESP, Dept Mech Engn, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationUniv Sao Paulo, Dept Mech Engn, BR-13566590 Sao Carlos, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, UNESP, Dept Mech Engn, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent527-534
dc.identifierhttp://dx.doi.org/10.1590/S1516-14392013005000199
dc.identifier.citationMaterials Research-ibero-american Journal Of Materials. Sao Carlos: Univ Fed Sao Carlos, Dept Engenharia Materials, v. 17, n. 2, p. 527-534, 2014.
dc.identifier.doi10.1590/S1516-14392013005000199
dc.identifier.fileS1516-14392014000200035.pdf
dc.identifier.issn1516-1439
dc.identifier.lattes7193872294818689
dc.identifier.orcid0000-0002-5477-8139
dc.identifier.scieloS1516-14392013005000199
dc.identifier.urihttp://hdl.handle.net/11449/113629
dc.identifier.wosWOS:000336255900035
dc.language.isoeng
dc.publisherUniv Fed Sao Carlos, Dept Engenharia Materials
dc.relation.ispartofMaterials Research-ibero-american Journal of Materials
dc.relation.ispartofjcr1.103
dc.relation.ispartofsjr0,398
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectultrafine-grained steelen
dc.subjectthermomechanical processingen
dc.subjectcarbide/carbonitride precipitationen
dc.subjectferriteen
dc.subjectmicrostructureen
dc.subjecttransmission electron microscopyen
dc.subjectelectron diffractionen
dc.titleSecond Phase Precipitation in Ultrafine-grained Ferrite Steelen
dc.typeArtigo
dcterms.rightsHolderUniv Fed Sao Carlos, Dept Engenharia Materials
unesp.author.lattes7193872294818689
unesp.author.orcid0000-0002-5477-8139[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt
unesp.departmentEngenharia Mecânica - FEISpt

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