Mechanical properties of Au foams under nanoindentation

Autores
Ruestes, Carlos Javier; Schwen, Daniel; Millán, Emmanuel Nicolás; Aparicio, Emiliano; Bringa, Eduardo Marcial
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Nanoscale metallic foams display mechanical properties which make them attractive for a variety of technological applications. We report simulated nanoindentation tests for a model polycrystalline nanoporous gold structure with 11 nm mean filament diameter and 35 nm average grain size, comparable to foams produced by dealloying. Hardness, plasticity mechanisms, the extension of the plastic zone and the applicability of several scaling laws are discussed. Plasticity occurs at the nodes mainly and is dominated by nucleation of dislocations at the atomic steps of the ligament surfaces, in a dislocation accumulation scenario. Shockley partials, perfect dislocations, Hirth partials, Lomer-Cottrel locks and twins were identified. Grain boundary sliding appears to play a minor role in deformation at the indentation rates used. Several scaling laws are tested and their results and applicability are discussed based on the structural parameters of the foam and the deformation mechanisms identified.
Fil: Ruestes, Carlos Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Schwen, Daniel. Idaho National Laboratory; Estados Unidos
Fil: Millán, Emmanuel Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Aparicio, Emiliano. Universidad de Mendoza; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
Fil: Bringa, Eduardo Marcial. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
Materia
NANOFOAMS
NANOINDENTATION
PLASTICITY
SIMULATION
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:11336/95637
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Mechanical properties of Au foams under nanoindentationRuestes, Carlos JavierSchwen, DanielMillán, Emmanuel NicolásAparicio, EmilianoBringa, Eduardo MarcialNANOFOAMSNANOINDENTATIONPLASTICITYSIMULATIONhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Nanoscale metallic foams display mechanical properties which make them attractive for a variety of technological applications. We report simulated nanoindentation tests for a model polycrystalline nanoporous gold structure with 11 nm mean filament diameter and 35 nm average grain size, comparable to foams produced by dealloying. Hardness, plasticity mechanisms, the extension of the plastic zone and the applicability of several scaling laws are discussed. Plasticity occurs at the nodes mainly and is dominated by nucleation of dislocations at the atomic steps of the ligament surfaces, in a dislocation accumulation scenario. Shockley partials, perfect dislocations, Hirth partials, Lomer-Cottrel locks and twins were identified. Grain boundary sliding appears to play a minor role in deformation at the indentation rates used. Several scaling laws are tested and their results and applicability are discussed based on the structural parameters of the foam and the deformation mechanisms identified.Fil: Ruestes, Carlos Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Schwen, Daniel. Idaho National Laboratory; Estados UnidosFil: Millán, Emmanuel Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Aparicio, Emiliano. Universidad de Mendoza; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; ArgentinaFil: Bringa, Eduardo Marcial. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; ArgentinaElsevier2018-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/95637Ruestes, Carlos Javier; Schwen, Daniel; Millán, Emmanuel Nicolás; Aparicio, Emiliano; Bringa, Eduardo Marcial; Mechanical properties of Au foams under nanoindentation; Elsevier; Computational Materials Science; 147; 5-2018; 154-1670927-0256CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0927025618301022info:eu-repo/semantics/altIdentifier/doi/10.1016/j.commatsci.2018.02.019info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:01:33Zoai:ri.conicet.gov.ar:11336/95637instacron: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:34982025-09-10 13:01:33.39CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Mechanical properties of Au foams under nanoindentation
title Mechanical properties of Au foams under nanoindentation
spellingShingle Mechanical properties of Au foams under nanoindentation
Ruestes, Carlos Javier
NANOFOAMS
NANOINDENTATION
PLASTICITY
SIMULATION
title_short Mechanical properties of Au foams under nanoindentation
title_full Mechanical properties of Au foams under nanoindentation
title_fullStr Mechanical properties of Au foams under nanoindentation
title_full_unstemmed Mechanical properties of Au foams under nanoindentation
title_sort Mechanical properties of Au foams under nanoindentation
dc.creator.none.fl_str_mv Ruestes, Carlos Javier
Schwen, Daniel
Millán, Emmanuel Nicolás
Aparicio, Emiliano
Bringa, Eduardo Marcial
author Ruestes, Carlos Javier
author_facet Ruestes, Carlos Javier
Schwen, Daniel
Millán, Emmanuel Nicolás
Aparicio, Emiliano
Bringa, Eduardo Marcial
author_role author
author2 Schwen, Daniel
Millán, Emmanuel Nicolás
Aparicio, Emiliano
Bringa, Eduardo Marcial
author2_role author
author
author
author
dc.subject.none.fl_str_mv NANOFOAMS
NANOINDENTATION
PLASTICITY
SIMULATION
topic NANOFOAMS
NANOINDENTATION
PLASTICITY
SIMULATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Nanoscale metallic foams display mechanical properties which make them attractive for a variety of technological applications. We report simulated nanoindentation tests for a model polycrystalline nanoporous gold structure with 11 nm mean filament diameter and 35 nm average grain size, comparable to foams produced by dealloying. Hardness, plasticity mechanisms, the extension of the plastic zone and the applicability of several scaling laws are discussed. Plasticity occurs at the nodes mainly and is dominated by nucleation of dislocations at the atomic steps of the ligament surfaces, in a dislocation accumulation scenario. Shockley partials, perfect dislocations, Hirth partials, Lomer-Cottrel locks and twins were identified. Grain boundary sliding appears to play a minor role in deformation at the indentation rates used. Several scaling laws are tested and their results and applicability are discussed based on the structural parameters of the foam and the deformation mechanisms identified.
Fil: Ruestes, Carlos Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Schwen, Daniel. Idaho National Laboratory; Estados Unidos
Fil: Millán, Emmanuel Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Aparicio, Emiliano. Universidad de Mendoza; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
Fil: Bringa, Eduardo Marcial. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
description Nanoscale metallic foams display mechanical properties which make them attractive for a variety of technological applications. We report simulated nanoindentation tests for a model polycrystalline nanoporous gold structure with 11 nm mean filament diameter and 35 nm average grain size, comparable to foams produced by dealloying. Hardness, plasticity mechanisms, the extension of the plastic zone and the applicability of several scaling laws are discussed. Plasticity occurs at the nodes mainly and is dominated by nucleation of dislocations at the atomic steps of the ligament surfaces, in a dislocation accumulation scenario. Shockley partials, perfect dislocations, Hirth partials, Lomer-Cottrel locks and twins were identified. Grain boundary sliding appears to play a minor role in deformation at the indentation rates used. Several scaling laws are tested and their results and applicability are discussed based on the structural parameters of the foam and the deformation mechanisms identified.
publishDate 2018
dc.date.none.fl_str_mv 2018-05
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/11336/95637
Ruestes, Carlos Javier; Schwen, Daniel; Millán, Emmanuel Nicolás; Aparicio, Emiliano; Bringa, Eduardo Marcial; Mechanical properties of Au foams under nanoindentation; Elsevier; Computational Materials Science; 147; 5-2018; 154-167
0927-0256
CONICET Digital
CONICET
url http://hdl.handle.net/11336/95637
identifier_str_mv Ruestes, Carlos Javier; Schwen, Daniel; Millán, Emmanuel Nicolás; Aparicio, Emiliano; Bringa, Eduardo Marcial; Mechanical properties of Au foams under nanoindentation; Elsevier; Computational Materials Science; 147; 5-2018; 154-167
0927-0256
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://www.sciencedirect.com/science/article/pii/S0927025618301022
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.commatsci.2018.02.019
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
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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 12.993085

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