Study of the isothermal bainitic transformation and austenite stability in an advanced Al-rich medium-Mn steel

Isothermal bainitic transformation of a lean medium-Mn steel containing (in mass%) 0.18C–3.6Mn–1.7Al–0.23Si–0.2Mo–0.04–Nb after full austenitization at 1100 ºC was studied by means of high resolution dilatometry. The effects of isothermal holding temperatures ranging from 450 to 350 °C on the bainit...

Descripción completa

Detalles Bibliográficos
Autores: Morawiec, M., Ruiz-Jiménez, Víctor, García Mateo, Carlos, Jiménez, José Antonio, Grajcar, Adam
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/289511
Acceso en línea:http://hdl.handle.net/10261/289511
Access Level:acceso abierto
Palabra clave:Hot-rolled sheet
Dilatometry study
Retained austenite
Phase transformation kinetic
Bainite formation
id ES_a99223f313a9079ff921e69c4e8d967d
oai_identifier_str oai:digital.csic.es:10261/289511
network_acronym_str ES
network_name_str España
repository_id_str
spelling Study of the isothermal bainitic transformation and austenite stability in an advanced Al-rich medium-Mn steelMorawiec, M.Ruiz-Jiménez, VíctorGarcía Mateo, CarlosJiménez, José AntonioGrajcar, AdamHot-rolled sheetDilatometry studyRetained austenitePhase transformation kineticBainite formationIsothermal bainitic transformation of a lean medium-Mn steel containing (in mass%) 0.18C–3.6Mn–1.7Al–0.23Si–0.2Mo–0.04–Nb after full austenitization at 1100 ºC was studied by means of high resolution dilatometry. The effects of isothermal holding temperatures ranging from 450 to 350 °C on the bainitic transformation kinetics was studied experimentally characterizing the microstructure present after a holding time ranging from 15 min to 2 h. The obtained results showed that the bainitic transformation is uncompleted at temperatures above 425 °C. The carbon enrichment of the austenite during isothermal treatment at 450 °C and 425 °C is not enough to avoid martensitic transformation of the austenite during cooling to room temperature. Thus, it is obtained a mixed structure including bainitic ferrite and martensite. Decreasing the austempering temperature resulted in a more pronounced bainite formation. The kinetics of the transformation during austempering at 350ºC is quite similar to that observed at 400 °C, so that 60 min are needed in both cases to complete the reaction. However, local variations in chemical composition associated to segregation of Mn and Al during casting solidification results in differences in the transformation rate of bainitic reaction between different areas in the material. A balance difference between the dendritic and interdendritic areas is responsible for the differences observed among test samples in the kinetics of the isothermal bainitic transformation and the final microstructure.The financial support of the National Science Center, Poland, is gratefully acknowledged, grant no. 2017/27/B/ST8/02864. JAJ and CG-M would like to acknowledge the Comunidad de Madrid and the Spanish Ministry of Science and Innovation for the financial support by means of the MAT4.0-CM and AFORMAR (PID2019-109334RB) projects respectively.Springer NatureNational Science Centre (Poland)Comunidad de MadridMinisterio de Ciencia e Innovación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2023202320222023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_dcae04bcPublisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/289511reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-109334RB-C31info:eu-repo/grantAgreement/COMUNIDAD DE MADRID//MAT4.0-CMhttps://doi.org/10.1007/s43452-022-00475-9Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2895112026-05-22T06:33:51Z
dc.title.none.fl_str_mv Study of the isothermal bainitic transformation and austenite stability in an advanced Al-rich medium-Mn steel
title Study of the isothermal bainitic transformation and austenite stability in an advanced Al-rich medium-Mn steel
spellingShingle Study of the isothermal bainitic transformation and austenite stability in an advanced Al-rich medium-Mn steel
Morawiec, M.
Hot-rolled sheet
Dilatometry study
Retained austenite
Phase transformation kinetic
Bainite formation
title_short Study of the isothermal bainitic transformation and austenite stability in an advanced Al-rich medium-Mn steel
title_full Study of the isothermal bainitic transformation and austenite stability in an advanced Al-rich medium-Mn steel
title_fullStr Study of the isothermal bainitic transformation and austenite stability in an advanced Al-rich medium-Mn steel
title_full_unstemmed Study of the isothermal bainitic transformation and austenite stability in an advanced Al-rich medium-Mn steel
title_sort Study of the isothermal bainitic transformation and austenite stability in an advanced Al-rich medium-Mn steel
dc.creator.none.fl_str_mv Morawiec, M.
Ruiz-Jiménez, Víctor
García Mateo, Carlos
Jiménez, José Antonio
Grajcar, Adam
author Morawiec, M.
author_facet Morawiec, M.
Ruiz-Jiménez, Víctor
García Mateo, Carlos
Jiménez, José Antonio
Grajcar, Adam
author_role author
author2 Ruiz-Jiménez, Víctor
García Mateo, Carlos
Jiménez, José Antonio
Grajcar, Adam
author2_role author
author
author
author
dc.contributor.none.fl_str_mv National Science Centre (Poland)
Comunidad de Madrid
Ministerio de Ciencia e Innovación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Hot-rolled sheet
Dilatometry study
Retained austenite
Phase transformation kinetic
Bainite formation
topic Hot-rolled sheet
Dilatometry study
Retained austenite
Phase transformation kinetic
Bainite formation
description Isothermal bainitic transformation of a lean medium-Mn steel containing (in mass%) 0.18C–3.6Mn–1.7Al–0.23Si–0.2Mo–0.04–Nb after full austenitization at 1100 ºC was studied by means of high resolution dilatometry. The effects of isothermal holding temperatures ranging from 450 to 350 °C on the bainitic transformation kinetics was studied experimentally characterizing the microstructure present after a holding time ranging from 15 min to 2 h. The obtained results showed that the bainitic transformation is uncompleted at temperatures above 425 °C. The carbon enrichment of the austenite during isothermal treatment at 450 °C and 425 °C is not enough to avoid martensitic transformation of the austenite during cooling to room temperature. Thus, it is obtained a mixed structure including bainitic ferrite and martensite. Decreasing the austempering temperature resulted in a more pronounced bainite formation. The kinetics of the transformation during austempering at 350ºC is quite similar to that observed at 400 °C, so that 60 min are needed in both cases to complete the reaction. However, local variations in chemical composition associated to segregation of Mn and Al during casting solidification results in differences in the transformation rate of bainitic reaction between different areas in the material. A balance difference between the dendritic and interdendritic areas is responsible for the differences observed among test samples in the kinetics of the isothermal bainitic transformation and the final microstructure.
publishDate 2022
dc.date.none.fl_str_mv 2022
2023
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_dcae04bc
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/289511
url http://hdl.handle.net/10261/289511
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-109334RB-C31
info:eu-repo/grantAgreement/COMUNIDAD DE MADRID//MAT4.0-CM
https://doi.org/10.1007/s43452-022-00475-9
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869416032662192128
score 15.812429

Similares en LA Referencia