Heat Treatment and Yb-Fiber Laser Welding of a Maraging Steel

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dc.contributor.authorFanton, Leonardo [UNESP]
dc.contributor.authorAbdalla, Antonio Jorge [UNESP]
dc.contributor.authorFernandes de Lima, M. S.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionInst Estudos Avancados DCTA IEAv
dc.date.accessioned2015-03-18T15:56:50Z
dc.date.available2015-03-18T15:56:50Z
dc.date.issued2014-09-01
dc.description.abstractMaraging steels are iron-nickel alloys having an unusual combination of high mechanical strength and high toughness. In this work, the effects of laser welding and postweld heat treatments have been analyzed. The fusion zone showed a cellular-dendritic morphology with a relatively low hardness (approximate to 450 HV) compared to the heat-affected zones (HAZs) and base material (approximate to 500 HV). The segregation in the fusion zone increases the tendency of austenite phase formation during aging. The solutionized and aged coupons presented the highest yield strength values (approximate to 1890 MPa). Homogenization treatment showed to be effective on eliminating the as-cast dendritic structure of the fusion zone, but decreased the yield strength to about 1350 MPa, showing that this treatment should be used carefully. The welded specimens presented tensile strength close to the unwelded specimens, demonstrating that the ytterbium-fiber laser welding of 18Ni-type maraging steels could be considered.en
dc.description.affiliationUniv Estadual Paulista Julio de Mesquita Filho UN, Sao Paulo, Brazil
dc.description.affiliationInst Estudos Avancados DCTA IEAv, Sao Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista Julio de Mesquita Filho UN, Sao Paulo, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipInstituto de Estudos Avancados (IEAv/DCTA)
dc.description.sponsorshipIdCAPES: 014/08
dc.format.extent362S-368S
dc.identifierhttp://www.nxtbook.com/nxtbooks/aws/wj_201409/index.php?startid=362-s
dc.identifier.citationWelding Journal. Miami: Amer Welding Soc, v. 93, n. 9, p. 362S-368S, 2014.
dc.identifier.issn0043-2296
dc.identifier.urihttp://hdl.handle.net/11449/117727
dc.identifier.wosWOS:000346330300024
dc.language.isoeng
dc.publisherAmer Welding Soc
dc.relation.ispartofWelding Journal
dc.relation.ispartofjcr1.652
dc.relation.ispartofsjr0,654
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectLaser Beam Weldingen
dc.subjectMaraging Steelsen
dc.subjectHigh-Strength Steelsen
dc.subjectPrecipitation Hardeningen
dc.titleHeat Treatment and Yb-Fiber Laser Welding of a Maraging Steelen
dc.typeArtigo
dcterms.rightsHolderAmer Welding Soc
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Guaratinguetápt
unesp.departmentEngenharia Mecânica - FEGpt

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Guaratinguetá - FEG - Faculdade de Engenharia e Ciências