Back-stresses and geometrical hardening as competing mechanisms enhancing ductility in HCP metals
Autor(a) principal: | |
---|---|
Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/36842 |
Resumo: | By recourse of computational mechanics, back-stresses are unveiled as a major source for the increase in work hardening during forming of hexagonal close-packaged (hcp) metals. Polycrystalline visco-plastic self-consistent (VPSC) and crystal plasticity finite element modelling (CPFEM) simulations of tensile uniaxial experiments were used along with experimental texture information. Simulations took into account the analogous variation in the critical resolved shear stress (CRSS) values of each slip family that could result from an increase in the test temperature. As the CRSS ratio between secondary and primary slip families increased, two different contributions to the variation of the work hardening rate were observed depending on the simulation framework: (i) a decrease in the work hardening rate in VPSC simulations attributed to texture evolution or geometrical hardening and (ii) an increase in the work hardening rate in CPFEM simulations due to back-stresses. While geometrical hardening is present in both simulation frameworks, only CPFEM is able to capture the influence of back-stresses on the increase of the work hardening rate with temperature. The results provided here contribute to a better understanding of the deformation mechanisms present in warm forming of hcp metals, showing also that CPFEM is a better simulation framework to study warm forming of hcp metals. |
id |
RCAP_0ef1fbbcf231eb025ab33d29a25156da |
---|---|
oai_identifier_str |
oai:ria.ua.pt:10773/36842 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
|
spelling |
Back-stresses and geometrical hardening as competing mechanisms enhancing ductility in HCP metalsBack-stressesCrystal plasticityFormingHCP metalsTextureWork-hardeningBy recourse of computational mechanics, back-stresses are unveiled as a major source for the increase in work hardening during forming of hexagonal close-packaged (hcp) metals. Polycrystalline visco-plastic self-consistent (VPSC) and crystal plasticity finite element modelling (CPFEM) simulations of tensile uniaxial experiments were used along with experimental texture information. Simulations took into account the analogous variation in the critical resolved shear stress (CRSS) values of each slip family that could result from an increase in the test temperature. As the CRSS ratio between secondary and primary slip families increased, two different contributions to the variation of the work hardening rate were observed depending on the simulation framework: (i) a decrease in the work hardening rate in VPSC simulations attributed to texture evolution or geometrical hardening and (ii) an increase in the work hardening rate in CPFEM simulations due to back-stresses. While geometrical hardening is present in both simulation frameworks, only CPFEM is able to capture the influence of back-stresses on the increase of the work hardening rate with temperature. The results provided here contribute to a better understanding of the deformation mechanisms present in warm forming of hcp metals, showing also that CPFEM is a better simulation framework to study warm forming of hcp metals.Elsevier2023-04-03T13:12:36Z2018-06-27T00:00:00Z2018-06-27info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/36842eng0921-509310.1016/j.msea.2018.05.046Esqué-de los Ojos, D.Nguyen, C.-T.Orozco-Caballero, A.Timar, G.Quinta da Fonseca, J.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-17T04:18:29ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Back-stresses and geometrical hardening as competing mechanisms enhancing ductility in HCP metals |
title |
Back-stresses and geometrical hardening as competing mechanisms enhancing ductility in HCP metals |
spellingShingle |
Back-stresses and geometrical hardening as competing mechanisms enhancing ductility in HCP metals Esqué-de los Ojos, D. Back-stresses Crystal plasticity Forming HCP metals Texture Work-hardening |
title_short |
Back-stresses and geometrical hardening as competing mechanisms enhancing ductility in HCP metals |
title_full |
Back-stresses and geometrical hardening as competing mechanisms enhancing ductility in HCP metals |
title_fullStr |
Back-stresses and geometrical hardening as competing mechanisms enhancing ductility in HCP metals |
title_full_unstemmed |
Back-stresses and geometrical hardening as competing mechanisms enhancing ductility in HCP metals |
title_sort |
Back-stresses and geometrical hardening as competing mechanisms enhancing ductility in HCP metals |
author |
Esqué-de los Ojos, D. |
author_facet |
Esqué-de los Ojos, D. Nguyen, C.-T. Orozco-Caballero, A. Timar, G. Quinta da Fonseca, J. |
author_role |
author |
author2 |
Nguyen, C.-T. Orozco-Caballero, A. Timar, G. Quinta da Fonseca, J. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Esqué-de los Ojos, D. Nguyen, C.-T. Orozco-Caballero, A. Timar, G. Quinta da Fonseca, J. |
dc.subject.por.fl_str_mv |
Back-stresses Crystal plasticity Forming HCP metals Texture Work-hardening |
topic |
Back-stresses Crystal plasticity Forming HCP metals Texture Work-hardening |
description |
By recourse of computational mechanics, back-stresses are unveiled as a major source for the increase in work hardening during forming of hexagonal close-packaged (hcp) metals. Polycrystalline visco-plastic self-consistent (VPSC) and crystal plasticity finite element modelling (CPFEM) simulations of tensile uniaxial experiments were used along with experimental texture information. Simulations took into account the analogous variation in the critical resolved shear stress (CRSS) values of each slip family that could result from an increase in the test temperature. As the CRSS ratio between secondary and primary slip families increased, two different contributions to the variation of the work hardening rate were observed depending on the simulation framework: (i) a decrease in the work hardening rate in VPSC simulations attributed to texture evolution or geometrical hardening and (ii) an increase in the work hardening rate in CPFEM simulations due to back-stresses. While geometrical hardening is present in both simulation frameworks, only CPFEM is able to capture the influence of back-stresses on the increase of the work hardening rate with temperature. The results provided here contribute to a better understanding of the deformation mechanisms present in warm forming of hcp metals, showing also that CPFEM is a better simulation framework to study warm forming of hcp metals. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-06-27T00:00:00Z 2018-06-27 2023-04-03T13:12:36Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10773/36842 |
url |
http://hdl.handle.net/10773/36842 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0921-5093 10.1016/j.msea.2018.05.046 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
|
repository.mail.fl_str_mv |
|
_version_ |
1777303595480252416 |