Impact of Si on Microstructure and Mechanical Properties of 22MnB5 Hot Stamping Steel Treated by Quenching & Partitioning (Q&P)

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dc.contributor.authorLinke, Bernd M.
dc.contributor.authorGerber, Thomas
dc.contributor.authorHatscher, Ansgar
dc.contributor.authorSalvatori, Ilaria
dc.contributor.authorAranguren, Iñigo
dc.contributor.authorArribas, Maribel
dc.contributor.institutionCCAM
dc.contributor.institutionCIRMETAL
dc.date.issued2017-11-21
dc.descriptionPublisher Copyright: © 2017, The Minerals, Metals & Materials Society and ASM International.
dc.description.abstractBased on 22MnB5 hot stamping steel, three model alloys containing 0.5, 0.8, and 1.5 wt pct Si were produced, heat treated by quenching and partitioning (Q&P), and characterized. Aided by DICTRA calculations, the thermal Q&P cycles were designed to fit into industrial hot stamping by keeping partitioning times £ 30 seconds. As expected, Si increased the amount of retained austenite (RA) stabilized after final cooling. However, for the intermediate Si alloy the heat treatment exerted a particularly pronounced influence with an RA content three times as high for the one-step process compared to the two-step process. It appeared that 0.8 wt pct Si sufficed to suppress direct cementite formation from within martensite laths but did not sufficiently stabilize carbon-soaked RA at higher temperatures. Tensile and bending tests showed strongly diverging effects of austenite on ductility. Total elongation improved consistently with increasing RA content independently from its carbon content. In contrast, the bending angle was not impacted by high-carbon RA but deteriorated almost linearly with the amount of low-carbon RA.en
dc.description.statusPeer reviewed
dc.format.extent12
dc.format.extent2369846
dc.identifier.citationLinke , B M , Gerber , T , Hatscher , A , Salvatori , I , Aranguren , I & Arribas , M 2017 , ' Impact of Si on Microstructure and Mechanical Properties of 22MnB5 Hot Stamping Steel Treated by Quenching & Partitioning (Q &P) ' , Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science , vol. 49 , no. 1 , pp. 54-65 . https://doi.org/10.1007/s11661-017-4400-7
dc.identifier.doi10.1007/s11661-017-4400-7
dc.identifier.issn1073-5623
dc.identifier.otherresearchoutputwizard: 11556/477
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85034664523&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subject.keywordsHot stamping steel
dc.subject.keywordsDICTRA calculations
dc.subject.keywordsIndustrial hot stamping
dc.subject.keywordsAustenite
dc.subject.keywordsCementite
dc.subject.keywordsMartensite
dc.subject.keywordsTensile and bending tests
dc.subject.keywordsCarbon
dc.subject.keywordsHot stamping steel
dc.subject.keywordsDICTRA calculations
dc.subject.keywordsIndustrial hot stamping
dc.subject.keywordsAustenite
dc.subject.keywordsCementite
dc.subject.keywordsMartensite
dc.subject.keywordsTensile and bending tests
dc.subject.keywordsCarbon
dc.subject.keywordsCondensed Matter Physics
dc.subject.keywordsMechanics of Materials
dc.subject.keywordsMetals and Alloys
dc.subject.keywordsFunding Info
dc.subject.keywordsThe authors gratefully acknowledge the financial support by the Research Fund for Coal and Steel via ELONHOSTAMP project (Grant agreement No. RFSR-CT-2013-00010). A final project report with a focus towards industrialization is in process of being published.
dc.subject.keywordsThe authors gratefully acknowledge the financial support by the Research Fund for Coal and Steel via ELONHOSTAMP project (Grant agreement No. RFSR-CT-2013-00010). A final project report with a focus towards industrialization is in process of being published.
dc.titleImpact of Si on Microstructure and Mechanical Properties of 22MnB5 Hot Stamping Steel Treated by Quenching & Partitioning (Q&P)en
dc.typejournal article
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