The role of vacancies in the mobility of dislocations and grain boundaries in magnesium

Autores
Lambri, Osvaldo Agustin F.; Massot, M.; Riehemann, W.; Lucioni, Eldo Jose; Plazaola, F.; García, J. A.
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Vacancy flux or supersaturation enhances grain-boundary mobility, but experimental evidence is not large and in many cases the role of vacancies is only inferred indirectly. We will show effectively in the present work the importance of the vacancy role in grain-boundary mobility in commercial pure and high-purity magnesium using mechanical spectroscopy, electrical resistivity and positron annihilation spectroscopy. It has been found that the mobility decrease of grain boundaries and dislocations is related to vacancy concentration reduction attained after the homogenisation treatment. Indeed, the largest vacancy concentration reduction is observed between 420 and 500 K. Unlocking grain boundaries and dislocations requires new vacancies, generated at temperatures above 500 K. In addition, a new damping peak related to vacancies was discovered at 490 K for an oscillating frequency of 1 Hz.
Fil: Lambri, Osvaldo Agustin F.. 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: Massot, M.. Universidad del País Vasco; España
Fil: Riehemann, W.. Technische Universität Clausthal; Alemania
Fil: Lucioni, Eldo Jose. 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: Plazaola, F.. Universidad del País Vasco; España
Fil: García, J. A.. Universidad del País Vasco; España
Materia
INTERNAL FRICTION
DISLOCATION MOBILITY
GRAIN BOUNDARIES
VACANCIES
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:11336/95260
Acceder
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network_name_str CONICET Digital (CONICET)
spelling The role of vacancies in the mobility of dislocations and grain boundaries in magnesiumLambri, Osvaldo Agustin F.Massot, M.Riehemann, W.Lucioni, Eldo JosePlazaola, F.García, J. A.INTERNAL FRICTIONDISLOCATION MOBILITYGRAIN BOUNDARIESVACANCIEShttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2Vacancy flux or supersaturation enhances grain-boundary mobility, but experimental evidence is not large and in many cases the role of vacancies is only inferred indirectly. We will show effectively in the present work the importance of the vacancy role in grain-boundary mobility in commercial pure and high-purity magnesium using mechanical spectroscopy, electrical resistivity and positron annihilation spectroscopy. It has been found that the mobility decrease of grain boundaries and dislocations is related to vacancy concentration reduction attained after the homogenisation treatment. Indeed, the largest vacancy concentration reduction is observed between 420 and 500 K. Unlocking grain boundaries and dislocations requires new vacancies, generated at temperatures above 500 K. In addition, a new damping peak related to vacancies was discovered at 490 K for an oscillating frequency of 1 Hz.Fil: Lambri, Osvaldo Agustin F.. 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: Massot, M.. Universidad del País Vasco; EspañaFil: Riehemann, W.. Technische Universität Clausthal; AlemaniaFil: Lucioni, Eldo Jose. 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: Plazaola, F.. Universidad del País Vasco; EspañaFil: García, J. A.. Universidad del País Vasco; EspañaWiley VCH Verlag2007-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/95260Lambri, Osvaldo Agustin F.; Massot, M.; Riehemann, W.; Lucioni, Eldo Jose; Plazaola, F.; et al.; The role of vacancies in the mobility of dislocations and grain boundaries in magnesium; Wiley VCH Verlag; Physica Status Solidi A-applications And Materials Science; 204; 4; 4-2007; 1077-10920031-89651862-6300CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/pssa.200622336info:eu-repo/semantics/altIdentifier/doi/10.1002/pssa.200622336info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:09:49Zoai:ri.conicet.gov.ar:11336/95260instacron: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 10:09:49.918CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The role of vacancies in the mobility of dislocations and grain boundaries in magnesium
title The role of vacancies in the mobility of dislocations and grain boundaries in magnesium
spellingShingle The role of vacancies in the mobility of dislocations and grain boundaries in magnesium
Lambri, Osvaldo Agustin F.
INTERNAL FRICTION
DISLOCATION MOBILITY
GRAIN BOUNDARIES
VACANCIES
title_short The role of vacancies in the mobility of dislocations and grain boundaries in magnesium
title_full The role of vacancies in the mobility of dislocations and grain boundaries in magnesium
title_fullStr The role of vacancies in the mobility of dislocations and grain boundaries in magnesium
title_full_unstemmed The role of vacancies in the mobility of dislocations and grain boundaries in magnesium
title_sort The role of vacancies in the mobility of dislocations and grain boundaries in magnesium
dc.creator.none.fl_str_mv Lambri, Osvaldo Agustin F.
Massot, M.
Riehemann, W.
Lucioni, Eldo Jose
Plazaola, F.
García, J. A.
author Lambri, Osvaldo Agustin F.
author_facet Lambri, Osvaldo Agustin F.
Massot, M.
Riehemann, W.
Lucioni, Eldo Jose
Plazaola, F.
García, J. A.
author_role author
author2 Massot, M.
Riehemann, W.
Lucioni, Eldo Jose
Plazaola, F.
García, J. A.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv INTERNAL FRICTION
DISLOCATION MOBILITY
GRAIN BOUNDARIES
VACANCIES
topic INTERNAL FRICTION
DISLOCATION MOBILITY
GRAIN BOUNDARIES
VACANCIES
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Vacancy flux or supersaturation enhances grain-boundary mobility, but experimental evidence is not large and in many cases the role of vacancies is only inferred indirectly. We will show effectively in the present work the importance of the vacancy role in grain-boundary mobility in commercial pure and high-purity magnesium using mechanical spectroscopy, electrical resistivity and positron annihilation spectroscopy. It has been found that the mobility decrease of grain boundaries and dislocations is related to vacancy concentration reduction attained after the homogenisation treatment. Indeed, the largest vacancy concentration reduction is observed between 420 and 500 K. Unlocking grain boundaries and dislocations requires new vacancies, generated at temperatures above 500 K. In addition, a new damping peak related to vacancies was discovered at 490 K for an oscillating frequency of 1 Hz.
Fil: Lambri, Osvaldo Agustin F.. 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: Massot, M.. Universidad del País Vasco; España
Fil: Riehemann, W.. Technische Universität Clausthal; Alemania
Fil: Lucioni, Eldo Jose. 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: Plazaola, F.. Universidad del País Vasco; España
Fil: García, J. A.. Universidad del País Vasco; España
description Vacancy flux or supersaturation enhances grain-boundary mobility, but experimental evidence is not large and in many cases the role of vacancies is only inferred indirectly. We will show effectively in the present work the importance of the vacancy role in grain-boundary mobility in commercial pure and high-purity magnesium using mechanical spectroscopy, electrical resistivity and positron annihilation spectroscopy. It has been found that the mobility decrease of grain boundaries and dislocations is related to vacancy concentration reduction attained after the homogenisation treatment. Indeed, the largest vacancy concentration reduction is observed between 420 and 500 K. Unlocking grain boundaries and dislocations requires new vacancies, generated at temperatures above 500 K. In addition, a new damping peak related to vacancies was discovered at 490 K for an oscillating frequency of 1 Hz.
publishDate 2007
dc.date.none.fl_str_mv 2007-04
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/11336/95260
Lambri, Osvaldo Agustin F.; Massot, M.; Riehemann, W.; Lucioni, Eldo Jose; Plazaola, F.; et al.; The role of vacancies in the mobility of dislocations and grain boundaries in magnesium; Wiley VCH Verlag; Physica Status Solidi A-applications And Materials Science; 204; 4; 4-2007; 1077-1092
0031-8965
1862-6300
CONICET Digital
CONICET
url http://hdl.handle.net/11336/95260
identifier_str_mv Lambri, Osvaldo Agustin F.; Massot, M.; Riehemann, W.; Lucioni, Eldo Jose; Plazaola, F.; et al.; The role of vacancies in the mobility of dislocations and grain boundaries in magnesium; Wiley VCH Verlag; Physica Status Solidi A-applications And Materials Science; 204; 4; 4-2007; 1077-1092
0031-8965
1862-6300
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/pssa.200622336
info:eu-repo/semantics/altIdentifier/doi/10.1002/pssa.200622336
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
dc.publisher.none.fl_str_mv Wiley VCH Verlag
publisher.none.fl_str_mv Wiley VCH Verlag
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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