Microstructural characterization of EUROFER 97 during low-cycle fatigue

Autores
Giordana, María Florencia; Alvarez, Iris; Armas, Alberto Franklin
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The quenched and tempered reduced-activation ferritic/martensitic steel EUROFER 97 is one of the candidates for structural components of Generation IV nuclear power plants. The cyclic behaviour of this steel during isothermal plastic strain-controlled tests was investigated at room temperature and at 550 C. Under low-cycle fatigue test this steel shows, after the first few cycles, a pronounced cyclic softening accompanied by microstructural changes such as the decrease of the free dislocation density inside the subgrain. The rate of softening increases with temperature being very pronounced at temperatures above 500 C. The evolution of the flow stress during cycling was studied by analyzing the so-called ‘‘back’’ and ‘‘friction’’ stresses obtained from the hysteresis loops measured along the entire test. From the analysis of the hysteresis loops and corroborated by electron microscopy observations, it can be concluded that the strong cyclic softening observed is produced by the decrease exhibited by the friction stress. The Taylor coefficient was calculated measuring the evolution of the free dislocation density.
Fil: Giordana, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Alvarez, Iris. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Armas, Alberto Franklin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Materia
MARTENSITIC STEELS
LOW-CYCLE FATIGUE
MICROSTRUCTURE CHARACTERIZATION
TAYLOR COEFFICIENT
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/272590
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/272590
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Microstructural characterization of EUROFER 97 during low-cycle fatigueGiordana, María FlorenciaAlvarez, IrisArmas, Alberto FranklinMARTENSITIC STEELSLOW-CYCLE FATIGUEMICROSTRUCTURE CHARACTERIZATIONTAYLOR COEFFICIENThttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2The quenched and tempered reduced-activation ferritic/martensitic steel EUROFER 97 is one of the candidates for structural components of Generation IV nuclear power plants. The cyclic behaviour of this steel during isothermal plastic strain-controlled tests was investigated at room temperature and at 550 C. Under low-cycle fatigue test this steel shows, after the first few cycles, a pronounced cyclic softening accompanied by microstructural changes such as the decrease of the free dislocation density inside the subgrain. The rate of softening increases with temperature being very pronounced at temperatures above 500 C. The evolution of the flow stress during cycling was studied by analyzing the so-called ‘‘back’’ and ‘‘friction’’ stresses obtained from the hysteresis loops measured along the entire test. From the analysis of the hysteresis loops and corroborated by electron microscopy observations, it can be concluded that the strong cyclic softening observed is produced by the decrease exhibited by the friction stress. The Taylor coefficient was calculated measuring the evolution of the free dislocation density.Fil: Giordana, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Alvarez, Iris. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Armas, Alberto Franklin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaElsevier Science2012-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/272590Giordana, María Florencia; Alvarez, Iris; Armas, Alberto Franklin; Microstructural characterization of EUROFER 97 during low-cycle fatigue; Elsevier Science; Journal of Nuclear Materials; 424; 1-3; 5-2012; 247-2510022-3115CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jnucmat.2012.03.019info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-05T09:37:30Zoai:ri.conicet.gov.ar:11336/272590instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-11-05 09:37:30.845CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Microstructural characterization of EUROFER 97 during low-cycle fatigue
title Microstructural characterization of EUROFER 97 during low-cycle fatigue
spellingShingle Microstructural characterization of EUROFER 97 during low-cycle fatigue
Giordana, María Florencia
MARTENSITIC STEELS
LOW-CYCLE FATIGUE
MICROSTRUCTURE CHARACTERIZATION
TAYLOR COEFFICIENT
title_short Microstructural characterization of EUROFER 97 during low-cycle fatigue
title_full Microstructural characterization of EUROFER 97 during low-cycle fatigue
title_fullStr Microstructural characterization of EUROFER 97 during low-cycle fatigue
title_full_unstemmed Microstructural characterization of EUROFER 97 during low-cycle fatigue
title_sort Microstructural characterization of EUROFER 97 during low-cycle fatigue
dc.creator.none.fl_str_mv Giordana, María Florencia
Alvarez, Iris
Armas, Alberto Franklin
author Giordana, María Florencia
author_facet Giordana, María Florencia
Alvarez, Iris
Armas, Alberto Franklin
author_role author
author2 Alvarez, Iris
Armas, Alberto Franklin
author2_role author
author
dc.subject.none.fl_str_mv MARTENSITIC STEELS
LOW-CYCLE FATIGUE
MICROSTRUCTURE CHARACTERIZATION
TAYLOR COEFFICIENT
topic MARTENSITIC STEELS
LOW-CYCLE FATIGUE
MICROSTRUCTURE CHARACTERIZATION
TAYLOR COEFFICIENT
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The quenched and tempered reduced-activation ferritic/martensitic steel EUROFER 97 is one of the candidates for structural components of Generation IV nuclear power plants. The cyclic behaviour of this steel during isothermal plastic strain-controlled tests was investigated at room temperature and at 550 C. Under low-cycle fatigue test this steel shows, after the first few cycles, a pronounced cyclic softening accompanied by microstructural changes such as the decrease of the free dislocation density inside the subgrain. The rate of softening increases with temperature being very pronounced at temperatures above 500 C. The evolution of the flow stress during cycling was studied by analyzing the so-called ‘‘back’’ and ‘‘friction’’ stresses obtained from the hysteresis loops measured along the entire test. From the analysis of the hysteresis loops and corroborated by electron microscopy observations, it can be concluded that the strong cyclic softening observed is produced by the decrease exhibited by the friction stress. The Taylor coefficient was calculated measuring the evolution of the free dislocation density.
Fil: Giordana, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Alvarez, Iris. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Armas, Alberto Franklin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
description The quenched and tempered reduced-activation ferritic/martensitic steel EUROFER 97 is one of the candidates for structural components of Generation IV nuclear power plants. The cyclic behaviour of this steel during isothermal plastic strain-controlled tests was investigated at room temperature and at 550 C. Under low-cycle fatigue test this steel shows, after the first few cycles, a pronounced cyclic softening accompanied by microstructural changes such as the decrease of the free dislocation density inside the subgrain. The rate of softening increases with temperature being very pronounced at temperatures above 500 C. The evolution of the flow stress during cycling was studied by analyzing the so-called ‘‘back’’ and ‘‘friction’’ stresses obtained from the hysteresis loops measured along the entire test. From the analysis of the hysteresis loops and corroborated by electron microscopy observations, it can be concluded that the strong cyclic softening observed is produced by the decrease exhibited by the friction stress. The Taylor coefficient was calculated measuring the evolution of the free dislocation density.
publishDate 2012
dc.date.none.fl_str_mv 2012-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/272590
Giordana, María Florencia; Alvarez, Iris; Armas, Alberto Franklin; Microstructural characterization of EUROFER 97 during low-cycle fatigue; Elsevier Science; Journal of Nuclear Materials; 424; 1-3; 5-2012; 247-251
0022-3115
CONICET Digital
CONICET
url http://hdl.handle.net/11336/272590
identifier_str_mv Giordana, María Florencia; Alvarez, Iris; Armas, Alberto Franklin; Microstructural characterization of EUROFER 97 during low-cycle fatigue; Elsevier Science; Journal of Nuclear Materials; 424; 1-3; 5-2012; 247-251
0022-3115
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jnucmat.2012.03.019
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1847976850458935296
score 13.121305

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