Kinetic Transition during Ferrite Growth in Fe-C-Mn Medium Carbon Steel

The kinetics of austenite-to-ferrite diffusional transformation in a medium carbon Fe-C-Mn steel was calculated based on classical nucleation and growth theory coupled with CALPHAD multi-component thermodynamics. The description of the growth rate of proeutectoid ferrite includes a time-dependence d...

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Detalles Bibliográficos
Autores: Capdevila, Carlos, Cornide, Juan, Tanaka, Kouji, Nakanishi, Koukichi, Urones-Garrote, E.
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/62977
Acceso en línea:http://hdl.handle.net/10261/62977
Access Level:acceso abierto
Palabra clave:phase transformations
kinetic modeling
medium-carbon manganese steel
forging steel
Multicomponent thermodynamics
proeutectoid ferrite
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spelling Kinetic Transition during Ferrite Growth in Fe-C-Mn Medium Carbon SteelCapdevila, CarlosCornide, JuanTanaka, KoujiNakanishi, KoukichiUrones-Garrote, E.phase transformationskinetic modelingmedium-carbon manganese steelforging steelMulticomponent thermodynamicsproeutectoid ferriteThe kinetics of austenite-to-ferrite diffusional transformation in a medium carbon Fe-C-Mn steel was calculated based on classical nucleation and growth theory coupled with CALPHAD multi-component thermodynamics. The description of the growth rate of proeutectoid ferrite includes a time-dependence due to the carbon enrichment in the remaining austenite. The experimental slower kinetics, especially a stagnating behavior at the later stage, has been successfully reproduced when a transition from initial paraequilibrium (PE) to local equilibrium negligible partition (LENP) conditions at austenite:ferrite (γ/α) interface was assumed. This transition is allowed when the velocity of moving γ/α interface is slow enough to be compared with Mn diffusivity, which leads to built up a Mn spike in the interface. This assumption is consistent with a series of scanning transmission electron microscopy (STEM) analyses for Mn and C which indicates that initial unpartitioned Mn ferrite growth is replaced by partitioned growthfinancial support of Japan Science and Technology Agency (JST). The authors gratefully acknowledge the support of the Spanish Ministry of Science and Innovation for funding this research under the contract MAT2007 – 63873. J. Cornide acknowledges the Spanish Ministerio de Ciencia e Inovación for financial support in the form of PhD research grant (FPI)Peer reviewedSpringer NatureConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201220122011info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/62977reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1007/s11661-011-0650-ySíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/629772026-05-22T06:33:51Z
dc.title.none.fl_str_mv Kinetic Transition during Ferrite Growth in Fe-C-Mn Medium Carbon Steel
title Kinetic Transition during Ferrite Growth in Fe-C-Mn Medium Carbon Steel
spellingShingle Kinetic Transition during Ferrite Growth in Fe-C-Mn Medium Carbon Steel
Capdevila, Carlos
phase transformations
kinetic modeling
medium-carbon manganese steel
forging steel
Multicomponent thermodynamics
proeutectoid ferrite
title_short Kinetic Transition during Ferrite Growth in Fe-C-Mn Medium Carbon Steel
title_full Kinetic Transition during Ferrite Growth in Fe-C-Mn Medium Carbon Steel
title_fullStr Kinetic Transition during Ferrite Growth in Fe-C-Mn Medium Carbon Steel
title_full_unstemmed Kinetic Transition during Ferrite Growth in Fe-C-Mn Medium Carbon Steel
title_sort Kinetic Transition during Ferrite Growth in Fe-C-Mn Medium Carbon Steel
dc.creator.none.fl_str_mv Capdevila, Carlos
Cornide, Juan
Tanaka, Kouji
Nakanishi, Koukichi
Urones-Garrote, E.
author Capdevila, Carlos
author_facet Capdevila, Carlos
Cornide, Juan
Tanaka, Kouji
Nakanishi, Koukichi
Urones-Garrote, E.
author_role author
author2 Cornide, Juan
Tanaka, Kouji
Nakanishi, Koukichi
Urones-Garrote, E.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv phase transformations
kinetic modeling
medium-carbon manganese steel
forging steel
Multicomponent thermodynamics
proeutectoid ferrite
topic phase transformations
kinetic modeling
medium-carbon manganese steel
forging steel
Multicomponent thermodynamics
proeutectoid ferrite
description The kinetics of austenite-to-ferrite diffusional transformation in a medium carbon Fe-C-Mn steel was calculated based on classical nucleation and growth theory coupled with CALPHAD multi-component thermodynamics. The description of the growth rate of proeutectoid ferrite includes a time-dependence due to the carbon enrichment in the remaining austenite. The experimental slower kinetics, especially a stagnating behavior at the later stage, has been successfully reproduced when a transition from initial paraequilibrium (PE) to local equilibrium negligible partition (LENP) conditions at austenite:ferrite (γ/α) interface was assumed. This transition is allowed when the velocity of moving γ/α interface is slow enough to be compared with Mn diffusivity, which leads to built up a Mn spike in the interface. This assumption is consistent with a series of scanning transmission electron microscopy (STEM) analyses for Mn and C which indicates that initial unpartitioned Mn ferrite growth is replaced by partitioned growth
publishDate 2011
dc.date.none.fl_str_mv 2011
2012
2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/62977
url http://hdl.handle.net/10261/62977
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1007/s11661-011-0650-y
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_ 1869405107556188160
score 15.81155

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