Dilatational viscoplasticity of polycrystalline solids with intergranular cavities

Autores
Lebensohn, Ricardo Anibal; Idiart, Martín Ignacio; Castañeda, P. Ponte; Vincent, P.-G.
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We propose constitutive models for polycrystalline aggregates with intergranular cavities and test them against full-field numerical simulations. Such conditions are prevalent in many engineering applications and failure of metallic components (e.g. HIPing and other forming processes, spallation under dynamic loading conditions, etc.), where the dilatational effects associated with the presence of cavities must be accounted for, and standard polycrystalline models for incompressible plasticity are not appropriate. On the other hand, it is not clear that the use of porous plasticity models with isotropic matrix behavior is relevant, particularly, when large deformations can lead to significant texture evolution and therefore to strong matrix anisotropy. Of course, finite strains can also lead to significant changes in the porosity and pore shape, resulting in additional anisotropy development. In this work, we make use of ‘variational linear-comparison’ homogenization methods to develop constitutive models simultaneously accounting for texture of the matrix, porosity and average pore shape and orientation. The predictions of the models are compared with full-field numerical simulations based on fast Fourier transforms to study the influence of different microstructural features (e.g. overall porosity, texture of the matrix phase, single-crystal anisotropy, etc.) and type of loading (triaxiality) on the dilatational viscoplastic behavior of voided polycrystals. The results are also compared with the predictions of isotropic-matrix porous plasticity models to assess the effect of the possible matrix anisotropy in textured samples.
Fil: Lebensohn, Ricardo Anibal. Los Alamos National Laboratory; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Idiart, Martín Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ingeniería. Departamento de Aeronáutica; Argentina
Fil: Castañeda, P. Ponte. Institutos Madrileños de Estudios Avanzados; España. University of Pennsylvania; Estados Unidos
Fil: Vincent, P.-G.. Institut de Radioprotection et de Sûreté Nucléaire; Francia. Centre National de la Recherche Scientifique; Francia
Materia
VOIDS
PLASTICITY OF METALS
TEXTURE
ANISOTROPIC PROPERTIES
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:11336/95192

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spelling Dilatational viscoplasticity of polycrystalline solids with intergranular cavitiesLebensohn, Ricardo AnibalIdiart, Martín IgnacioCastañeda, P. PonteVincent, P.-G.VOIDSPLASTICITY OF METALSTEXTUREANISOTROPIC PROPERTIEShttps://purl.org/becyt/ford/2.3https://purl.org/becyt/ford/2We propose constitutive models for polycrystalline aggregates with intergranular cavities and test them against full-field numerical simulations. Such conditions are prevalent in many engineering applications and failure of metallic components (e.g. HIPing and other forming processes, spallation under dynamic loading conditions, etc.), where the dilatational effects associated with the presence of cavities must be accounted for, and standard polycrystalline models for incompressible plasticity are not appropriate. On the other hand, it is not clear that the use of porous plasticity models with isotropic matrix behavior is relevant, particularly, when large deformations can lead to significant texture evolution and therefore to strong matrix anisotropy. Of course, finite strains can also lead to significant changes in the porosity and pore shape, resulting in additional anisotropy development. In this work, we make use of ‘variational linear-comparison’ homogenization methods to develop constitutive models simultaneously accounting for texture of the matrix, porosity and average pore shape and orientation. The predictions of the models are compared with full-field numerical simulations based on fast Fourier transforms to study the influence of different microstructural features (e.g. overall porosity, texture of the matrix phase, single-crystal anisotropy, etc.) and type of loading (triaxiality) on the dilatational viscoplastic behavior of voided polycrystals. The results are also compared with the predictions of isotropic-matrix porous plasticity models to assess the effect of the possible matrix anisotropy in textured samples.Fil: Lebensohn, Ricardo Anibal. Los Alamos National Laboratory; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Idiart, Martín Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ingeniería. Departamento de Aeronáutica; ArgentinaFil: Castañeda, P. Ponte. Institutos Madrileños de Estudios Avanzados; España. University of Pennsylvania; Estados UnidosFil: Vincent, P.-G.. Institut de Radioprotection et de Sûreté Nucléaire; Francia. Centre National de la Recherche Scientifique; FranciaTaylor & Francis Ltd2011-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/95192Lebensohn, Ricardo Anibal; Idiart, Martín Ignacio; Castañeda, P. Ponte; Vincent, P.-G.; Dilatational viscoplasticity of polycrystalline solids with intergranular cavities; Taylor & Francis Ltd; Philosophical Magazine; 91; 22; 8-2011; 3038-30671478-6435CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/14786435.2011.561811info:eu-repo/semantics/altIdentifier/doi/10.1080/14786435.2011.561811info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:55:00Zoai:ri.conicet.gov.ar:11336/95192instacron: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 09:55:01.049CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Dilatational viscoplasticity of polycrystalline solids with intergranular cavities
title Dilatational viscoplasticity of polycrystalline solids with intergranular cavities
spellingShingle Dilatational viscoplasticity of polycrystalline solids with intergranular cavities
Lebensohn, Ricardo Anibal
VOIDS
PLASTICITY OF METALS
TEXTURE
ANISOTROPIC PROPERTIES
title_short Dilatational viscoplasticity of polycrystalline solids with intergranular cavities
title_full Dilatational viscoplasticity of polycrystalline solids with intergranular cavities
title_fullStr Dilatational viscoplasticity of polycrystalline solids with intergranular cavities
title_full_unstemmed Dilatational viscoplasticity of polycrystalline solids with intergranular cavities
title_sort Dilatational viscoplasticity of polycrystalline solids with intergranular cavities
dc.creator.none.fl_str_mv Lebensohn, Ricardo Anibal
Idiart, Martín Ignacio
Castañeda, P. Ponte
Vincent, P.-G.
author Lebensohn, Ricardo Anibal
author_facet Lebensohn, Ricardo Anibal
Idiart, Martín Ignacio
Castañeda, P. Ponte
Vincent, P.-G.
author_role author
author2 Idiart, Martín Ignacio
Castañeda, P. Ponte
Vincent, P.-G.
author2_role author
author
author
dc.subject.none.fl_str_mv VOIDS
PLASTICITY OF METALS
TEXTURE
ANISOTROPIC PROPERTIES
topic VOIDS
PLASTICITY OF METALS
TEXTURE
ANISOTROPIC PROPERTIES
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.3
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv We propose constitutive models for polycrystalline aggregates with intergranular cavities and test them against full-field numerical simulations. Such conditions are prevalent in many engineering applications and failure of metallic components (e.g. HIPing and other forming processes, spallation under dynamic loading conditions, etc.), where the dilatational effects associated with the presence of cavities must be accounted for, and standard polycrystalline models for incompressible plasticity are not appropriate. On the other hand, it is not clear that the use of porous plasticity models with isotropic matrix behavior is relevant, particularly, when large deformations can lead to significant texture evolution and therefore to strong matrix anisotropy. Of course, finite strains can also lead to significant changes in the porosity and pore shape, resulting in additional anisotropy development. In this work, we make use of ‘variational linear-comparison’ homogenization methods to develop constitutive models simultaneously accounting for texture of the matrix, porosity and average pore shape and orientation. The predictions of the models are compared with full-field numerical simulations based on fast Fourier transforms to study the influence of different microstructural features (e.g. overall porosity, texture of the matrix phase, single-crystal anisotropy, etc.) and type of loading (triaxiality) on the dilatational viscoplastic behavior of voided polycrystals. The results are also compared with the predictions of isotropic-matrix porous plasticity models to assess the effect of the possible matrix anisotropy in textured samples.
Fil: Lebensohn, Ricardo Anibal. Los Alamos National Laboratory; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Idiart, Martín Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ingeniería. Departamento de Aeronáutica; Argentina
Fil: Castañeda, P. Ponte. Institutos Madrileños de Estudios Avanzados; España. University of Pennsylvania; Estados Unidos
Fil: Vincent, P.-G.. Institut de Radioprotection et de Sûreté Nucléaire; Francia. Centre National de la Recherche Scientifique; Francia
description We propose constitutive models for polycrystalline aggregates with intergranular cavities and test them against full-field numerical simulations. Such conditions are prevalent in many engineering applications and failure of metallic components (e.g. HIPing and other forming processes, spallation under dynamic loading conditions, etc.), where the dilatational effects associated with the presence of cavities must be accounted for, and standard polycrystalline models for incompressible plasticity are not appropriate. On the other hand, it is not clear that the use of porous plasticity models with isotropic matrix behavior is relevant, particularly, when large deformations can lead to significant texture evolution and therefore to strong matrix anisotropy. Of course, finite strains can also lead to significant changes in the porosity and pore shape, resulting in additional anisotropy development. In this work, we make use of ‘variational linear-comparison’ homogenization methods to develop constitutive models simultaneously accounting for texture of the matrix, porosity and average pore shape and orientation. The predictions of the models are compared with full-field numerical simulations based on fast Fourier transforms to study the influence of different microstructural features (e.g. overall porosity, texture of the matrix phase, single-crystal anisotropy, etc.) and type of loading (triaxiality) on the dilatational viscoplastic behavior of voided polycrystals. The results are also compared with the predictions of isotropic-matrix porous plasticity models to assess the effect of the possible matrix anisotropy in textured samples.
publishDate 2011
dc.date.none.fl_str_mv 2011-08
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/11336/95192
Lebensohn, Ricardo Anibal; Idiart, Martín Ignacio; Castañeda, P. Ponte; Vincent, P.-G.; Dilatational viscoplasticity of polycrystalline solids with intergranular cavities; Taylor & Francis Ltd; Philosophical Magazine; 91; 22; 8-2011; 3038-3067
1478-6435
CONICET Digital
CONICET
url http://hdl.handle.net/11336/95192
identifier_str_mv Lebensohn, Ricardo Anibal; Idiart, Martín Ignacio; Castañeda, P. Ponte; Vincent, P.-G.; Dilatational viscoplasticity of polycrystalline solids with intergranular cavities; Taylor & Francis Ltd; Philosophical Magazine; 91; 22; 8-2011; 3038-3067
1478-6435
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.tandfonline.com/doi/abs/10.1080/14786435.2011.561811
info:eu-repo/semantics/altIdentifier/doi/10.1080/14786435.2011.561811
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 Taylor & Francis Ltd
publisher.none.fl_str_mv Taylor & Francis Ltd
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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