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Austenite reversion kinetics and stability during tempering of an additively manufactured maraging 300 steel

2019-10-01Artigo científico Acesso aberto
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dc.contributor.authorConde, F. F.
dc.contributor.authorEscobar, J. D.
dc.contributor.authorOliveira, J. P.
dc.contributor.authorJardini, A. L.
dc.contributor.authorBose Filho, W. W.
dc.contributor.authorAvila, J. A.
dc.contributor.institutionDEMI - Departamento de Engenharia Mecânica e Industrial
dc.contributor.institutionUNIDEMI - Unidade de Investigação e Desenvolvimento em Engenharia Mecânica e Industrial
dc.contributor.pblElsevier
dc.date.accessioned2020-04-02T22:55:15Z
dc.date.available2020-04-02T22:55:15Z
dc.date.issued2019-10-01
dc.descriptionFAPESP (2017/17697-5) FAPESP (2008/57863-0) FAPESP (2014/20844-1) FAPESP (2019/00691-0) CNPq (573661/2008-1) UID/EMS/00667/2019
dc.description.abstractReverted austenite is a metastable phase that can be used in maraging steels to increase ductility via transformation-induced plasticity or TRIP effect. In the present study, 18Ni maraging steel samples were built by selective laser melting, homogenized at 820 °C and then subjected to different isothermal tempering cycles aiming for martensite-to-austenite reversion. Thermodynamic simulations were used to estimate the inter-critical austenite + ferrite field and to interpret the results obtained after tempering. In-situ synchrotron X-ray diffraction was performed during the heating, soaking and cooling of the samples to characterize the martensite-to-austenite reversion kinetics and the reverted austenite stability upon cooling to room temperature. The reverted austenite size and distribution were measured by Electron Backscattered Diffraction. Results showed that the selected soaking temperatures of 610 °C and 650 °C promoted significant and gradual martensite-to-austenite reversion with high thermal stability. Tempering at 690 °C caused massive and complete austenitization, resulting in low austenite stability upon cooling due to compositional homogenization.en
dc.description.versionpublished
dc.format.extent4442993
dc.identifier.doi10.1016/j.addma.2019.100804
dc.identifier.issn2214-8604
dc.identifier.otherPURE: 17212596
dc.identifier.otherPURE UUID: 89199271-99ad-43c2-858f-0460f5872245
dc.identifier.otherScopus: 85069901164
dc.identifier.otherWOS: 000492672600011
dc.identifier.otherORCID: /0000-0001-6906-1870/work/70243865
dc.identifier.urihttp://hdl.handle.net/10362/95587
dc.identifier.urlhttps://www.scopus.com/pages/publications/85069901164
dc.language.isoeng
dc.peerreviewedyes
dc.subjectAdditive manufacturing
dc.subjectMaraging 300
dc.subjectMartensite-To-Austenite reversion
dc.subjectBiomedical Engineering
dc.subjectGeneral Materials Science
dc.subjectEngineering (miscellaneous)
dc.subjectIndustrial and Manufacturing Engineering
dc.titleAustenite reversion kinetics and stability during tempering of an additively manufactured maraging 300 steelen
dc.typejournal article
degois.publication.titleAdditive Manufacturing
degois.publication.volume29
dspace.entity.typePublication
rcaap.rightsopenAccess

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