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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.date.accessioned2017-12-21T15:07:28Z
dc.date.available2017-12-21T15:07:28Z
dc.date.issued2017-11-21
dc.identifier.citationLinke, Bernd M., Thomas Gerber, Ansgar Hatscher, Ilaria Salvatori, Iñigo Aranguren, and Maribel Arribas. “Impact of Si on Microstructure and Mechanical Properties of 22MnB5 Hot Stamping Steel Treated by Quenching & Partitioning (Q&P).” Metallurgical and Materials Transactions A (November 21, 2017). doi:10.1007/s11661-017-4400-7.en
dc.identifier.issn1073-5623en
dc.identifier.urihttp://hdl.handle.net/11556/477
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.sponsorshipThe 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.en
dc.language.isoengen
dc.publisherSpringer USen
dc.titleImpact of Si on Microstructure and Mechanical Properties of 22MnB5 Hot Stamping Steel Treated by Quenching & Partitioning (Q&P)en
dc.typearticleen
dc.identifier.doi10.1007/s11661-017-4400-7en
dc.isiNoen
dc.rights.accessRightsembargoedAccessen
dc.subject.keywordsHot stamping steelen
dc.subject.keywordsDICTRA calculationsen
dc.subject.keywordsIndustrial hot stampingen
dc.subject.keywordsAusteniteen
dc.subject.keywordsCementiteen
dc.subject.keywordsMartensiteen
dc.subject.keywordsTensile and bending testsen
dc.subject.keywordsCarbonen
dc.identifier.essn1543-1940en
dc.journal.titleMetallurgical and Materials Transactions Aen
dc.page.final12en
dc.page.initial1en


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