Mechanical properties of irradiated nanowires - A molecular dynamics study

Autores
Figueroa, Emilio; Tramontina Videla, Diego Ramiro; Gutiérrez, Gonzalo; Bringa, Eduardo Marcial
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work we study, by means of molecular dynamics simulation, the change in the mechanical properties of a gold nanowire with pre-existing radiation damage. The gold nanowire is used as a simple model for a nanofoam, made of connected nanowires. Radiation damage by keV ions leads to the formation of a stacking fault tetrahedron (SFT), and this defect leads to a reduced plastic threshold, as expected, when the nanowire is subjected to tension. We quantify dislocation and twin density during the deformation, and find that the early activation of the SFT as a dislocation source leads to reduced dislocation densities compared to the case without radiation damage. In addition, we observed a total destruction of the SFT, as opposed to a recent simulation study where it was postulated that SFTs might act as self-generating dislocation sources. The flow stress at large deformation is also found to be slightly larger for the irradiated case, in agreement with recent experiments.
Fil: Figueroa, Emilio. Universidad de Chile; Chile. Universidad Tecnológica Metropolitana; Chile
Fil: Tramontina Videla, Diego Ramiro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina. Universidad de Mendoza; Argentina
Fil: Gutiérrez, Gonzalo. Universidad de Chile; Chile
Fil: Bringa, Eduardo Marcial. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
Materia
Computer Simulation
Mechanical Properties
Nanowires
Radiation Damage
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:11336/59298
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Mechanical properties of irradiated nanowires - A molecular dynamics studyFigueroa, EmilioTramontina Videla, Diego RamiroGutiérrez, GonzaloBringa, Eduardo MarcialComputer SimulationMechanical PropertiesNanowiresRadiation Damagehttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2In this work we study, by means of molecular dynamics simulation, the change in the mechanical properties of a gold nanowire with pre-existing radiation damage. The gold nanowire is used as a simple model for a nanofoam, made of connected nanowires. Radiation damage by keV ions leads to the formation of a stacking fault tetrahedron (SFT), and this defect leads to a reduced plastic threshold, as expected, when the nanowire is subjected to tension. We quantify dislocation and twin density during the deformation, and find that the early activation of the SFT as a dislocation source leads to reduced dislocation densities compared to the case without radiation damage. In addition, we observed a total destruction of the SFT, as opposed to a recent simulation study where it was postulated that SFTs might act as self-generating dislocation sources. The flow stress at large deformation is also found to be slightly larger for the irradiated case, in agreement with recent experiments.Fil: Figueroa, Emilio. Universidad de Chile; Chile. Universidad Tecnológica Metropolitana; ChileFil: Tramontina Videla, Diego Ramiro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina. Universidad de Mendoza; ArgentinaFil: Gutiérrez, Gonzalo. Universidad de Chile; ChileFil: Bringa, Eduardo Marcial. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; ArgentinaElsevier Science2015-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/59298Figueroa, Emilio; Tramontina Videla, Diego Ramiro; Gutiérrez, Gonzalo; Bringa, Eduardo Marcial; Mechanical properties of irradiated nanowires - A molecular dynamics study; Elsevier Science; Journal of Nuclear Materials; 467; 12-2015; 677-6820022-3115CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jnucmat.2015.10.036info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S002231151530283Xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:26:38Zoai:ri.conicet.gov.ar:11336/59298instacron: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 10:26:39.154CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Mechanical properties of irradiated nanowires - A molecular dynamics study
title Mechanical properties of irradiated nanowires - A molecular dynamics study
spellingShingle Mechanical properties of irradiated nanowires - A molecular dynamics study
Figueroa, Emilio
Computer Simulation
Mechanical Properties
Nanowires
Radiation Damage
title_short Mechanical properties of irradiated nanowires - A molecular dynamics study
title_full Mechanical properties of irradiated nanowires - A molecular dynamics study
title_fullStr Mechanical properties of irradiated nanowires - A molecular dynamics study
title_full_unstemmed Mechanical properties of irradiated nanowires - A molecular dynamics study
title_sort Mechanical properties of irradiated nanowires - A molecular dynamics study
dc.creator.none.fl_str_mv Figueroa, Emilio
Tramontina Videla, Diego Ramiro
Gutiérrez, Gonzalo
Bringa, Eduardo Marcial
author Figueroa, Emilio
author_facet Figueroa, Emilio
Tramontina Videla, Diego Ramiro
Gutiérrez, Gonzalo
Bringa, Eduardo Marcial
author_role author
author2 Tramontina Videla, Diego Ramiro
Gutiérrez, Gonzalo
Bringa, Eduardo Marcial
author2_role author
author
author
dc.subject.none.fl_str_mv Computer Simulation
Mechanical Properties
Nanowires
Radiation Damage
topic Computer Simulation
Mechanical Properties
Nanowires
Radiation Damage
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv In this work we study, by means of molecular dynamics simulation, the change in the mechanical properties of a gold nanowire with pre-existing radiation damage. The gold nanowire is used as a simple model for a nanofoam, made of connected nanowires. Radiation damage by keV ions leads to the formation of a stacking fault tetrahedron (SFT), and this defect leads to a reduced plastic threshold, as expected, when the nanowire is subjected to tension. We quantify dislocation and twin density during the deformation, and find that the early activation of the SFT as a dislocation source leads to reduced dislocation densities compared to the case without radiation damage. In addition, we observed a total destruction of the SFT, as opposed to a recent simulation study where it was postulated that SFTs might act as self-generating dislocation sources. The flow stress at large deformation is also found to be slightly larger for the irradiated case, in agreement with recent experiments.
Fil: Figueroa, Emilio. Universidad de Chile; Chile. Universidad Tecnológica Metropolitana; Chile
Fil: Tramontina Videla, Diego Ramiro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina. Universidad de Mendoza; Argentina
Fil: Gutiérrez, Gonzalo. Universidad de Chile; Chile
Fil: Bringa, Eduardo Marcial. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
description In this work we study, by means of molecular dynamics simulation, the change in the mechanical properties of a gold nanowire with pre-existing radiation damage. The gold nanowire is used as a simple model for a nanofoam, made of connected nanowires. Radiation damage by keV ions leads to the formation of a stacking fault tetrahedron (SFT), and this defect leads to a reduced plastic threshold, as expected, when the nanowire is subjected to tension. We quantify dislocation and twin density during the deformation, and find that the early activation of the SFT as a dislocation source leads to reduced dislocation densities compared to the case without radiation damage. In addition, we observed a total destruction of the SFT, as opposed to a recent simulation study where it was postulated that SFTs might act as self-generating dislocation sources. The flow stress at large deformation is also found to be slightly larger for the irradiated case, in agreement with recent experiments.
publishDate 2015
dc.date.none.fl_str_mv 2015-12
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/11336/59298
Figueroa, Emilio; Tramontina Videla, Diego Ramiro; Gutiérrez, Gonzalo; Bringa, Eduardo Marcial; Mechanical properties of irradiated nanowires - A molecular dynamics study; Elsevier Science; Journal of Nuclear Materials; 467; 12-2015; 677-682
0022-3115
CONICET Digital
CONICET
url http://hdl.handle.net/11336/59298
identifier_str_mv Figueroa, Emilio; Tramontina Videla, Diego Ramiro; Gutiérrez, Gonzalo; Bringa, Eduardo Marcial; Mechanical properties of irradiated nanowires - A molecular dynamics study; Elsevier Science; Journal of Nuclear Materials; 467; 12-2015; 677-682
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.2015.10.036
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S002231151530283X
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 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
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score 13.070432

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