Modelling the formation of austenite in the intercritical interval in ductile iron

In this work, the formation of austenite in the intercritical interval under continuous heating and isothermal holding in ductile iron with various chemistries was investigated using high-resolution dilatometry and quantitative metallographic analysis. The study was conducted using fully ferritic an...

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Autores: Machado, Harold D., Toda Caraballo, Isaac, García Mateo, Carlos, Aristizábal-Sierra, Ricardo
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:dnet:digitalcsic_::1f3b47ee1fcf4e38f0e96aec0d6bab69
Acceso en línea:http://hdl.handle.net/10261/265059
Access Level:acceso abierto
Palabra clave:Intercritical austenitizing
Austenite formation
Intercritically austempered ductile iron
Austempered ductile iron
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spelling Modelling the formation of austenite in the intercritical interval in ductile ironMachado, Harold D.Toda Caraballo, IsaacGarcía Mateo, CarlosAristizábal-Sierra, RicardoIntercritical austenitizingAustenite formationIntercritically austempered ductile ironAustempered ductile ironIn this work, the formation of austenite in the intercritical interval under continuous heating and isothermal holding in ductile iron with various chemistries was investigated using high-resolution dilatometry and quantitative metallographic analysis. The study was conducted using fully ferritic and fully pearlitic matrices as initial microstructures. Subsequently, a mathematical model based on Avrami's equation, that describes the formation of austenite at the intercritical range, was proposed and adjusted to the experimental data. The results show that austenite formation at the intercritical range is faster and happens at lower temperatures when the initial microstructure is pearlitic. Additionally, the kinetic of austenite formation did not change by adding Cu and it is accelerated by adding Ni to the alloy. Finally, the Avrami's equation allowed to model the austenite formation under continuous heating followed by isothermal holding with a good adjustment to the experimental data, which contributes to the understanding of the kinetic of austenite formation in ductile iron at the intercritical rangeThe authors want to acknowledge COLCIENCIAS (Call 727), CODI (PRG 2017–16229) and CENIM (National Center for Metallurgical Research-Madrid-Spain).ElsevierColciencias (Colombia)CSIC - Centro Nacional de Investigaciones Metalúrgicas (CENIM)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2022202220222022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/265059reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1016/j.jmrt.2021.12.072Síinfo:eu-repo/semantics/openAccessoai:dnet:digitalcsic_::1f3b47ee1fcf4e38f0e96aec0d6bab692026-05-22T06:33:51Z
dc.title.none.fl_str_mv Modelling the formation of austenite in the intercritical interval in ductile iron
title Modelling the formation of austenite in the intercritical interval in ductile iron
spellingShingle Modelling the formation of austenite in the intercritical interval in ductile iron
Machado, Harold D.
Intercritical austenitizing
Austenite formation
Intercritically austempered ductile iron
Austempered ductile iron
title_short Modelling the formation of austenite in the intercritical interval in ductile iron
title_full Modelling the formation of austenite in the intercritical interval in ductile iron
title_fullStr Modelling the formation of austenite in the intercritical interval in ductile iron
title_full_unstemmed Modelling the formation of austenite in the intercritical interval in ductile iron
title_sort Modelling the formation of austenite in the intercritical interval in ductile iron
dc.creator.none.fl_str_mv Machado, Harold D.
Toda Caraballo, Isaac
García Mateo, Carlos
Aristizábal-Sierra, Ricardo
author Machado, Harold D.
author_facet Machado, Harold D.
Toda Caraballo, Isaac
García Mateo, Carlos
Aristizábal-Sierra, Ricardo
author_role author
author2 Toda Caraballo, Isaac
García Mateo, Carlos
Aristizábal-Sierra, Ricardo
author2_role author
author
author
dc.contributor.none.fl_str_mv Colciencias (Colombia)
CSIC - Centro Nacional de Investigaciones Metalúrgicas (CENIM)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Intercritical austenitizing
Austenite formation
Intercritically austempered ductile iron
Austempered ductile iron
topic Intercritical austenitizing
Austenite formation
Intercritically austempered ductile iron
Austempered ductile iron
description In this work, the formation of austenite in the intercritical interval under continuous heating and isothermal holding in ductile iron with various chemistries was investigated using high-resolution dilatometry and quantitative metallographic analysis. The study was conducted using fully ferritic and fully pearlitic matrices as initial microstructures. Subsequently, a mathematical model based on Avrami's equation, that describes the formation of austenite at the intercritical range, was proposed and adjusted to the experimental data. The results show that austenite formation at the intercritical range is faster and happens at lower temperatures when the initial microstructure is pearlitic. Additionally, the kinetic of austenite formation did not change by adding Cu and it is accelerated by adding Ni to the alloy. Finally, the Avrami's equation allowed to model the austenite formation under continuous heating followed by isothermal holding with a good adjustment to the experimental data, which contributes to the understanding of the kinetic of austenite formation in ductile iron at the intercritical range
publishDate 2022
dc.date.none.fl_str_mv 2022
2022
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/265059
url http://hdl.handle.net/10261/265059
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1016/j.jmrt.2021.12.072
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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
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score 15,811543

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