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hal.structure.identifierInstitut Jean Lamour [IJL]
dc.contributor.authorALLAIN, Sébastien
hal.structure.identifierInstitut Jean Lamour [IJL]
dc.contributor.authorGEANDIER, Guillaume
hal.structure.identifierArcelorMittal Maizières Research SA
dc.contributor.authorHELL, Jean-Christophe
hal.structure.identifierArcelorMittal Maizières Research SA
dc.contributor.authorSOLER, Michel
hal.structure.identifierGroupe de physique des matériaux [GPM]
dc.contributor.authorDANOIX, Fréderic
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGOUNÉ, Mohamed
dc.date.issued2017
dc.identifier.issn2075-4701
dc.description.abstractEnWe report the first ultra-fast time-resolved quantitative information on the quenching and partitioning process of conventional high-strength steel by an in situ high-energy X-ray diffraction (HEXRD) experiment. The time and temperature evolutions of phase fractions, their carbon content, and internal stresses were determined and discussed for different process parameters. It is shown that the austenite-to-martensite transformation below the martensite start temperature Ms is followed by a stage of fast carbon enrichment in austenite during isothermal holding at both 400 and 450 °C. The analysis proposed supports the concurrent bainite transformation and carbon diffusion from martensite to austenite as the main mechanisms of this enrichment. Furthermore, we give evidence that high hydrostatic tensile stresses in austenite are produced during the final quenching, and must be taken into account for the estimation of the carbon content in austenite. Finally, a large amount of carbon is shown to be trapped in the microstructure.
dc.description.sponsorshipPartition du carbone dans les phases ferritiques nanostructurées: cinétiques et microstructures - ANR-14-CE07-0029
dc.description.sponsorshipDesign des Alliages Métalliques pour Allègement des Structures - ANR-11-LABX-0008
dc.language.isoen
dc.publisherMDPI
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/
dc.subject.ensteel
dc.subject.enmartensite
dc.subject.enbainite
dc.subject.enQ&P
dc.subject.ensynchrotron
dc.subject.enHEXRD
dc.subject.enTRIP
dc.title.enEffects of Q&P processing conditions on austenite carbon enrichment studied by in situ high-energy x-ray diffraction experiments
dc.typeArticle de revue
dc.identifier.doi10.3390/met7070232
dc.subject.halChimie/Matériaux
bordeaux.journalMetals
bordeaux.page232
bordeaux.volume7
bordeaux.issue7
bordeaux.peerReviewedoui
hal.identifierhal-01566013
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01566013v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Metals&rft.date=2017&rft.volume=7&rft.issue=7&rft.spage=232&rft.epage=232&rft.eissn=2075-4701&rft.issn=2075-4701&rft.au=ALLAIN,%20S%C3%A9bastien&GEANDIER,%20Guillaume&HELL,%20Jean-Christophe&SOLER,%20Michel&DANOIX,%20Fr%C3%A9deric&rft.genre=article


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