Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/349534
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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampRezende, Andrei Bavaresco-
dc.contributor.authorunicampFonseca, Solange Tamara da-
dc.contributor.authorunicampFarina, Paula Fernanda da Silva-
dc.contributor.authorunicampMei, Paulo Roberto-
dc.typeArtigopt_BR
dc.titleEffect of alloy elements in time temperature transformation diagrams of railway wheelspt_BR
dc.contributor.authorRezende, A.B.-
dc.contributor.authorFernandes, F.M.-
dc.contributor.authorFonseca, S.T.-
dc.contributor.authorFarina, P.F.S.-
dc.contributor.authorGoldenstein, H.-
dc.contributor.authorMei, Paulo Roberto-
dc.subjectNióbiopt_BR
dc.subject.otherlanguageNiobiumpt_BR
dc.description.abstractThe Heavy-Haul railroad wheels started to use higher wear resistance steels microalloyed with niobium, vanadium, and molybdenum [1]. During continuous cooling, these elements depress the temperature of the pearlite formation, producing smaller interlamellar spacing that increases the hardness of the steel, besides to favor the precipitation hardening through the formation of carbides [2, 3]. Also, they delay the formation of difusional components like pearlite and bainite during isothermal transformation. The effects of these alloy elements on microstructure during isothermal transformation were studied in this work using a Bähr 805A/D dilatometer. Three different compositions of class C railway wheels steels (two microalloyed and one, non microalloyed) were analyzed in temperatures between 200 and 700 °C. The microstructure and hardness for each isothermal treatment were obtained after the experiments. Comparing with non microalloyed steel (7C), the vanadium addition (7V steel) did not affect the beginning of diffusion-controlled reactions (pearlite and bainite), but delayed the end of these reactions, and showed separated bays for pearlite and bainite. The Nb + Mo addition delayed the beginning and the ending of pearlite and bainite formation and also showed distinct bays for them. The delays in diffusion-controlled reactions were more intense in the 7NbMo steel than in 7V steel. The V or Nb + Mo additions decreased the start temperature for martensite formation and increased the start temperature for austenite formationpt_BR
dc.relation.ispartofDefect and diffusion forumpt_BR
dc.publisher.cityKapellwegpt_BR
dc.publisher.countrySuiçapt_BR
dc.publisherScientific.Netpt_BR
dc.date.issued2020-
dc.date.monthofcirculationMar.pt_BR
dc.language.isoengpt_BR
dc.description.volume400pt_BR
dc.description.firstpage11pt_BR
dc.description.lastpage20pt_BR
dc.rightsFechadopt_BR
dc.sourceSCOPUSpt_BR
dc.identifier.issn1012-0386pt_BR
dc.identifier.eissn1662-9507pt_BR
dc.identifier.doi10.4028/www.scientific.net/DDF.400.11pt_BR
dc.identifier.urlhttps://www.scientific.net/DDF.400.11pt_BR
dc.description.sponsorshipCONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQpt_BR
dc.description.sponsordocumentnumberNão tempt_BR
dc.date.available2020-09-17T16:18:29Z-
dc.date.accessioned2020-09-17T16:18:29Z-
dc.description.provenanceSubmitted by Susilene Barbosa da Silva (susilene@unicamp.br) on 2020-09-17T16:18:29Z No. of bitstreams: 0. Added 1 bitstream(s) on 2021-01-07T20:39:47Z : No. of bitstreams: 1 2-s2.0-85084008972.pdf: 2268192 bytes, checksum: 659437bc4d621753e632e334c45fc28c (MD5) Bitstreams deleted on 2021-01-08T14:10:21Z: 2-s2.0-85084008972.pdf,. Added 1 bitstream(s) on 2021-01-08T14:13:31Z : No. of bitstreams: 1 2-s2.0-85084008972.pdf: 2268192 bytes, checksum: 659437bc4d621753e632e334c45fc28c (MD5) Bitstreams deleted on 2021-01-13T13:27:13Z: 2-s2.0-85084008972.pdf,. Added 1 bitstream(s) on 2021-01-13T13:29:32Z : No. of bitstreams: 1 2-s2.0-85084008972.pdf: 2268192 bytes, checksum: 659437bc4d621753e632e334c45fc28c (MD5)en
dc.description.provenanceMade available in DSpace on 2020-09-17T16:18:29Z (GMT). No. of bitstreams: 0 Previous issue date: 2020en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/349534-
dc.contributor.departmentSem informaçãopt_BR
dc.contributor.departmentSem informaçãopt_BR
dc.contributor.departmentDepartamento de Engenharia de Manufatura e Materiaispt_BR
dc.contributor.departmentDepartamento de Engenharia de Materiaispt_BR
dc.contributor.unidadeFaculdade de Engenharia Mecânicapt_BR
dc.contributor.unidadeFaculdade de Engenharia Mecânicapt_BR
dc.contributor.unidadeFaculdade de Engenharia Mecânicapt_BR
dc.contributor.unidadeFaculdade de Engenharia Mecânicapt_BR
dc.subject.keywordBainitept_BR
dc.subject.keywordMicroalloyed Steelpt_BR
dc.subject.keywordRailway Wheelspt_BR
dc.subject.keywordVanadiumpt_BR
dc.identifier.source2-s2.0-85084008972pt_BR
dc.creator.orcidSem informaçãopt_BR
dc.creator.orcidSem informaçãopt_BR
dc.creator.orcid0000-0002-4722-8614pt_BR
dc.creator.orcid0000-0002-6150-9674pt_BR
dc.type.formArtigopt_BR
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