Effect of ausforming on microstructure and hardness characteristics of bainitic steel

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorKumnorkaew, Theerawaten_US
dc.contributor.authorLian, Junheen_US
dc.contributor.authorUthaisangsuk, Vitoonen_US
dc.contributor.authorBleck, Wolfgangen_US
dc.contributor.departmentDepartment of Mechanical Engineeringen
dc.contributor.groupauthorAdvanced Manufacturing and Materialsen
dc.contributor.organizationRWTH Aachen Universityen_US
dc.contributor.organizationKing Mongkut's University of Technology Thonburien_US
dc.date.accessioned2020-10-23T10:09:24Z
dc.date.available2020-10-23T10:09:24Z
dc.date.issued2020-11-01en_US
dc.description.abstractEffects of process parameters of the ausforming such as temperature, strain and strain rate on the martensitic start temperature, kinetics of isothermal bainitic transformation and microstructure refinement of a low carbon carbide-free bainitic steel were investigated. It was found that applying plastic deformation to untransformed austenite during intermediate temperatures decreased the martensite start temperature of steel and enabled isothermal bainitic transformation at low temperatures. Hereby, ausforming significantly generated heterogeneous nucleation sites, which accelerated the overall kinetics of bainitic transformation and thus increased bainitic phase fraction in steel. In addition, the ausforming enhanced the stability of austenite that led to reduced amount of martensite after cooling down to room temperature. Finally, the ausforming parameters and observed microstructure features were correlated and discussed along with the hardness of steel.en
dc.description.versionPeer revieweden
dc.format.extent10
dc.format.extent13365-13374
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationKumnorkaew, T, Lian, J, Uthaisangsuk, V & Bleck, W 2020, ' Effect of ausforming on microstructure and hardness characteristics of bainitic steel ', Journal of Materials Research and Technology, vol. 9, no. 6, pp. 13365-13374 . https://doi.org/10.1016/j.jmrt.2020.09.016en
dc.identifier.doi10.1016/j.jmrt.2020.09.016en_US
dc.identifier.issn2238-7854
dc.identifier.otherPURE UUID: a0c5cbcf-753d-4ece-9cd6-cc4bdd54ac50en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/a0c5cbcf-753d-4ece-9cd6-cc4bdd54ac50en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85092142095&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/52229892/ENG_Kumnorkaew_et_al_Effect_of_ausforming_Journal_of_Materials_Research_and_Technology.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/47070
dc.identifier.urnURN:NBN:fi:aalto-202010235957
dc.language.isoenen
dc.relation.ispartofseriesJournal of Materials Research and Technologyen
dc.relation.ispartofseriesVolume 9, issue 6en
dc.rightsopenAccessen
dc.subject.keywordAusformingen_US
dc.subject.keywordDeformation temperatureen_US
dc.subject.keywordGrain refinementen_US
dc.subject.keywordLow-carbon CFB steelen_US
dc.subject.keywordM/A constituenten_US
dc.subject.keywordStrain rateen_US
dc.titleEffect of ausforming on microstructure and hardness characteristics of bainitic steelen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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