Modelling and characterization of Chi phase grain boundary precipitation during agging of Fe-C-Ni-Mo stainless steel

High molybdenum stainless steels may contain the Chi precipitate (, Fe36Cr12Mo10) which may lead to undesirable effects on strength, toughness and corrosion resistance. In the present work, specimens of a 12Cr-9Ni-4Mo wt% steel are heat treated at different temperatures and times, and the average p...

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Detalles Bibliográficos
Autores: Xu, W., San-Martín, David, Rivera-Díaz del Castillo, P.E.J., Zwaag, S. van der
Tipo de recurso: artículo
Fecha de publicación:2007
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/77612
Acceso en línea:http://hdl.handle.net/10261/77612
Access Level:acceso abierto
Palabra clave:Chi precipitate
Precipitation kinetics
Particle size distribution
Modelling
Stainless steel
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spelling Modelling and characterization of Chi phase grain boundary precipitation during agging of Fe-C-Ni-Mo stainless steelXu, W.San-Martín, DavidRivera-Díaz del Castillo, P.E.J.Zwaag, S. van derChi precipitatePrecipitation kineticsParticle size distributionModellingStainless steelHigh molybdenum stainless steels may contain the Chi precipitate (, Fe36Cr12Mo10) which may lead to undesirable effects on strength, toughness and corrosion resistance. In the present work, specimens of a 12Cr-9Ni-4Mo wt% steel are heat treated at different temperatures and times, and the average particle size and particle size distribution of Chi precipitate are studied quantitatively. A computer model based onthe KWN framework has been developed to describe the evolution of Chi precipitation. The kinetic model takes the natural advantages of the KWN model to describe the precipitate particle size distribution, and is coupled with the thermodynamic software ThermoCalc® for calculating the instantaneous local thermodynamic equilibrium condition at the interface and the driving force for nucleation. A modified version of Zener’s theory accounting for capillarity effects at early growth stages is implemented in this model. The prediction of the model is compared to experimental results and both the average particle size and the particle size distribution are found to be in good agreement with experimental observations.the Netherlands Institute for Metals Research (NIMR) for the provision of funding through the programme “Designing ultra high strength corrosion resistance steels for aerospace applications” (project number MC5.04192) and “Tailoring of processable metastable steels” (project number 02EMM30-3)Peer reviewedElsevier201320132007info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/77612reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.msea.2007.02.071info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/776122026-05-22T06:33:51Z
dc.title.none.fl_str_mv Modelling and characterization of Chi phase grain boundary precipitation during agging of Fe-C-Ni-Mo stainless steel
title Modelling and characterization of Chi phase grain boundary precipitation during agging of Fe-C-Ni-Mo stainless steel
spellingShingle Modelling and characterization of Chi phase grain boundary precipitation during agging of Fe-C-Ni-Mo stainless steel
Xu, W.
Chi precipitate
Precipitation kinetics
Particle size distribution
Modelling
Stainless steel
title_short Modelling and characterization of Chi phase grain boundary precipitation during agging of Fe-C-Ni-Mo stainless steel
title_full Modelling and characterization of Chi phase grain boundary precipitation during agging of Fe-C-Ni-Mo stainless steel
title_fullStr Modelling and characterization of Chi phase grain boundary precipitation during agging of Fe-C-Ni-Mo stainless steel
title_full_unstemmed Modelling and characterization of Chi phase grain boundary precipitation during agging of Fe-C-Ni-Mo stainless steel
title_sort Modelling and characterization of Chi phase grain boundary precipitation during agging of Fe-C-Ni-Mo stainless steel
dc.creator.none.fl_str_mv Xu, W.
San-Martín, David
Rivera-Díaz del Castillo, P.E.J.
Zwaag, S. van der
author Xu, W.
author_facet Xu, W.
San-Martín, David
Rivera-Díaz del Castillo, P.E.J.
Zwaag, S. van der
author_role author
author2 San-Martín, David
Rivera-Díaz del Castillo, P.E.J.
Zwaag, S. van der
author2_role author
author
author
dc.subject.none.fl_str_mv Chi precipitate
Precipitation kinetics
Particle size distribution
Modelling
Stainless steel
topic Chi precipitate
Precipitation kinetics
Particle size distribution
Modelling
Stainless steel
description High molybdenum stainless steels may contain the Chi precipitate (, Fe36Cr12Mo10) which may lead to undesirable effects on strength, toughness and corrosion resistance. In the present work, specimens of a 12Cr-9Ni-4Mo wt% steel are heat treated at different temperatures and times, and the average particle size and particle size distribution of Chi precipitate are studied quantitatively. A computer model based onthe KWN framework has been developed to describe the evolution of Chi precipitation. The kinetic model takes the natural advantages of the KWN model to describe the precipitate particle size distribution, and is coupled with the thermodynamic software ThermoCalc® for calculating the instantaneous local thermodynamic equilibrium condition at the interface and the driving force for nucleation. A modified version of Zener’s theory accounting for capillarity effects at early growth stages is implemented in this model. The prediction of the model is compared to experimental results and both the average particle size and the particle size distribution are found to be in good agreement with experimental observations.
publishDate 2007
dc.date.none.fl_str_mv 2007
2013
2013
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/10261/77612
url http://hdl.handle.net/10261/77612
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.msea.2007.02.071
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 15,812429

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