Vacancy-solute association during ageing of a cold worked Mg-RE alloy

Autores
Moia, F.; Ferragut, R.; Dupasquier, A.; Macchi, Carlos Eugenio; Somoza, Alberto Horacio; Nie, J. F.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The vacancy-solute interactions during artificial ageing at 250C of cold worked samples of a commercial magnesium alloy WE54 (Mg-RE based) were studied by coincidence Doppler broadening of positron annihilation radiation and positron annihilation lifetime spectroscopy. The results show that in the as-cold-worked state the vacancies are associated with dislocations that are generated by the cold work, and that after artificial ageing at 250C the vacancies are associated with solute elements and help the formation of precipitate precursors. This mechanism accelerates the formation of hardening precipitates without any apparent changes in the precipitation sequence and in the products of the decomposition of the supersaturated solid solution. The present study demonstrates that the stronger hardening response achieved in the cold worked samples originates from the presence of a higher concentration of vacancies that is introduced by the cold work and is retained in the first few minutes of ageing.
Fil: Moia, F.. Politecnico di Milano; Italia
Fil: Ferragut, R.. Politecnico di Milano; Italia
Fil: Dupasquier, A.. Politecnico di Milano; Italia
Fil: Macchi, Carlos Eugenio. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil; Argentina
Fil: Somoza, Alberto Horacio. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil; Argentina
Fil: Nie, J. F.. Monash University; Australia
Materia
MAGNESIUM ALLOYS
POSITRON ANNIHILATION
PRECIPITATION
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:11336/242941
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Vacancy-solute association during ageing of a cold worked Mg-RE alloyMoia, F.Ferragut, R.Dupasquier, A.Macchi, Carlos EugenioSomoza, Alberto HoracioNie, J. F.MAGNESIUM ALLOYSPOSITRON ANNIHILATIONPRECIPITATIONhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The vacancy-solute interactions during artificial ageing at 250C of cold worked samples of a commercial magnesium alloy WE54 (Mg-RE based) were studied by coincidence Doppler broadening of positron annihilation radiation and positron annihilation lifetime spectroscopy. The results show that in the as-cold-worked state the vacancies are associated with dislocations that are generated by the cold work, and that after artificial ageing at 250C the vacancies are associated with solute elements and help the formation of precipitate precursors. This mechanism accelerates the formation of hardening precipitates without any apparent changes in the precipitation sequence and in the products of the decomposition of the supersaturated solid solution. The present study demonstrates that the stronger hardening response achieved in the cold worked samples originates from the presence of a higher concentration of vacancies that is introduced by the cold work and is retained in the first few minutes of ageing.Fil: Moia, F.. Politecnico di Milano; ItaliaFil: Ferragut, R.. Politecnico di Milano; ItaliaFil: Dupasquier, A.. Politecnico di Milano; ItaliaFil: Macchi, Carlos Eugenio. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil; ArgentinaFil: Somoza, Alberto Horacio. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil; ArgentinaFil: Nie, J. F.. Monash University; AustraliaTaylor and Francis2010-05-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/242941Moia, F.; Ferragut, R.; Dupasquier, A.; Macchi, Carlos Eugenio; Somoza, Alberto Horacio; et al.; Vacancy-solute association during ageing of a cold worked Mg-RE alloy; Taylor and Francis; Philosophical Magazine A; 90; 28-5-2010; 2135-21470141-8610CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1080/14786430701271959info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:06:32Zoai:ri.conicet.gov.ar:11336/242941instacron: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:34982025-09-29 10:06:32.331CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Vacancy-solute association during ageing of a cold worked Mg-RE alloy
title Vacancy-solute association during ageing of a cold worked Mg-RE alloy
spellingShingle Vacancy-solute association during ageing of a cold worked Mg-RE alloy
Moia, F.
MAGNESIUM ALLOYS
POSITRON ANNIHILATION
PRECIPITATION
title_short Vacancy-solute association during ageing of a cold worked Mg-RE alloy
title_full Vacancy-solute association during ageing of a cold worked Mg-RE alloy
title_fullStr Vacancy-solute association during ageing of a cold worked Mg-RE alloy
title_full_unstemmed Vacancy-solute association during ageing of a cold worked Mg-RE alloy
title_sort Vacancy-solute association during ageing of a cold worked Mg-RE alloy
dc.creator.none.fl_str_mv Moia, F.
Ferragut, R.
Dupasquier, A.
Macchi, Carlos Eugenio
Somoza, Alberto Horacio
Nie, J. F.
author Moia, F.
author_facet Moia, F.
Ferragut, R.
Dupasquier, A.
Macchi, Carlos Eugenio
Somoza, Alberto Horacio
Nie, J. F.
author_role author
author2 Ferragut, R.
Dupasquier, A.
Macchi, Carlos Eugenio
Somoza, Alberto Horacio
Nie, J. F.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv MAGNESIUM ALLOYS
POSITRON ANNIHILATION
PRECIPITATION
topic MAGNESIUM ALLOYS
POSITRON ANNIHILATION
PRECIPITATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The vacancy-solute interactions during artificial ageing at 250C of cold worked samples of a commercial magnesium alloy WE54 (Mg-RE based) were studied by coincidence Doppler broadening of positron annihilation radiation and positron annihilation lifetime spectroscopy. The results show that in the as-cold-worked state the vacancies are associated with dislocations that are generated by the cold work, and that after artificial ageing at 250C the vacancies are associated with solute elements and help the formation of precipitate precursors. This mechanism accelerates the formation of hardening precipitates without any apparent changes in the precipitation sequence and in the products of the decomposition of the supersaturated solid solution. The present study demonstrates that the stronger hardening response achieved in the cold worked samples originates from the presence of a higher concentration of vacancies that is introduced by the cold work and is retained in the first few minutes of ageing.
Fil: Moia, F.. Politecnico di Milano; Italia
Fil: Ferragut, R.. Politecnico di Milano; Italia
Fil: Dupasquier, A.. Politecnico di Milano; Italia
Fil: Macchi, Carlos Eugenio. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil; Argentina
Fil: Somoza, Alberto Horacio. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Física de Materiales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil; Argentina
Fil: Nie, J. F.. Monash University; Australia
description The vacancy-solute interactions during artificial ageing at 250C of cold worked samples of a commercial magnesium alloy WE54 (Mg-RE based) were studied by coincidence Doppler broadening of positron annihilation radiation and positron annihilation lifetime spectroscopy. The results show that in the as-cold-worked state the vacancies are associated with dislocations that are generated by the cold work, and that after artificial ageing at 250C the vacancies are associated with solute elements and help the formation of precipitate precursors. This mechanism accelerates the formation of hardening precipitates without any apparent changes in the precipitation sequence and in the products of the decomposition of the supersaturated solid solution. The present study demonstrates that the stronger hardening response achieved in the cold worked samples originates from the presence of a higher concentration of vacancies that is introduced by the cold work and is retained in the first few minutes of ageing.
publishDate 2010
dc.date.none.fl_str_mv 2010-05-28
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/11336/242941
Moia, F.; Ferragut, R.; Dupasquier, A.; Macchi, Carlos Eugenio; Somoza, Alberto Horacio; et al.; Vacancy-solute association during ageing of a cold worked Mg-RE alloy; Taylor and Francis; Philosophical Magazine A; 90; 28-5-2010; 2135-2147
0141-8610
CONICET Digital
CONICET
url http://hdl.handle.net/11336/242941
identifier_str_mv Moia, F.; Ferragut, R.; Dupasquier, A.; Macchi, Carlos Eugenio; Somoza, Alberto Horacio; et al.; Vacancy-solute association during ageing of a cold worked Mg-RE alloy; Taylor and Francis; Philosophical Magazine A; 90; 28-5-2010; 2135-2147
0141-8610
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1080/14786430701271959
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
dc.publisher.none.fl_str_mv Taylor and Francis
publisher.none.fl_str_mv Taylor and Francis
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
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score 13.070432

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