Microstructural Characterization of Ti-6Al-7Nb Alloy After Severe Plastic Deformation

Detalhes bibliográficos
Autor(a) principal: Gallego, Juno [UNESP]
Data de Publicação: 2012
Outros Autores: Pinheiro, Tiago Santos, Valiev, Ruslan Zufarovich, Polyakova, Veronika, Bolfarini, Claudemiro, Kiminami, Claudio Shyinti, Jorge, Alberto Moreira, Botta, Walter Jose
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S1516-14392012005000100
http://hdl.handle.net/11449/9923
Resumo: The ASTM F1295/Ti-6Al-7Nb alloy present mechanical properties and biocompatibility very attractive for application in medical and dental implants. In this context, processing of these Ti-based alloys by severe plastic deformation (SPD) has been extensively reported recently. However, the mechanical properties of equal channel angular pressed (ECAP) ASTM F1295 alloy are still a matter of research. In the present study, Ti-6Al-7Nb samples were processed by ECAP following thermomechanical processing which effects on the microstructure of Ti-6Al-7Nb alloy were investigated by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The analyses have shown that the microstructure was composed by ultrafine grains (UFG) with sizes ranging from 200 to 400 nm. Ring-type selected area electron diffraction patterns (SAEDP) suggested the co-existence of low- and high-angle grain boundaries. Some regions of the samples have presented evidences of the presence of grains with unfavorable orientation to the plastic deformation. These grains can act as rigid bodies and concentrate the deformation in its surrounding areas, as an "open-die grain" mechanism. Such deformation mechanism could be attributed to the differences in the plastic behavior between the alpha and beta titanium phases.
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spelling Microstructural Characterization of Ti-6Al-7Nb Alloy After Severe Plastic DeformationTi-6Al-7Nb alloyECAPultra-fine grained microstructureXRDTEMThe ASTM F1295/Ti-6Al-7Nb alloy present mechanical properties and biocompatibility very attractive for application in medical and dental implants. In this context, processing of these Ti-based alloys by severe plastic deformation (SPD) has been extensively reported recently. However, the mechanical properties of equal channel angular pressed (ECAP) ASTM F1295 alloy are still a matter of research. In the present study, Ti-6Al-7Nb samples were processed by ECAP following thermomechanical processing which effects on the microstructure of Ti-6Al-7Nb alloy were investigated by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The analyses have shown that the microstructure was composed by ultrafine grains (UFG) with sizes ranging from 200 to 400 nm. Ring-type selected area electron diffraction patterns (SAEDP) suggested the co-existence of low- and high-angle grain boundaries. Some regions of the samples have presented evidences of the presence of grains with unfavorable orientation to the plastic deformation. These grains can act as rigid bodies and concentrate the deformation in its surrounding areas, as an "open-die grain" mechanism. Such deformation mechanism could be attributed to the differences in the plastic behavior between the alpha and beta titanium phases.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)São Paulo State Univ UNESP, Dept Mech Engn, Ilha Solteira, SP, BrazilFed Univ São Carlos UFSCar, Dept Mat Engn, São Carlos, SP, BrazilUfa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa 450000, RussiaSão Paulo State Univ UNESP, Dept Mech Engn, Ilha Solteira, SP, BrazilUniversidade Federal de São Carlos (UFSCar), Dept Engenharia MaterialsUniversidade Estadual Paulista (Unesp)Universidade Federal de São Carlos (UFSCar)Ufa State Aviat Tech UnivGallego, Juno [UNESP]Pinheiro, Tiago SantosValiev, Ruslan ZufarovichPolyakova, VeronikaBolfarini, ClaudemiroKiminami, Claudio ShyintiJorge, Alberto MoreiraBotta, Walter Jose2014-05-20T13:29:25Z2014-05-20T13:29:25Z2012-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article786-791http://dx.doi.org/10.1590/S1516-14392012005000100Materials Research-ibero-american Journal of Materials. São Carlos: Universidade Federal de São Carlos (UFSCar), Dept Engenharia Materials, v. 15, n. 5, p. 786-791, 2012.1516-1439http://hdl.handle.net/11449/992310.1590/S1516-14392012005000100S1516-14392012000500016WOS:000309191500016S1516-14392012000500016.pdf71938722948186890000-0002-5477-8139Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Research-ibero-american Journal of Materials1.1030,398info:eu-repo/semantics/openAccess2024-07-04T20:06:15Zoai:repositorio.unesp.br:11449/9923Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:00:58.399728Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Microstructural Characterization of Ti-6Al-7Nb Alloy After Severe Plastic Deformation
title Microstructural Characterization of Ti-6Al-7Nb Alloy After Severe Plastic Deformation
spellingShingle Microstructural Characterization of Ti-6Al-7Nb Alloy After Severe Plastic Deformation
Gallego, Juno [UNESP]
Ti-6Al-7Nb alloy
ECAP
ultra-fine grained microstructure
XRD
TEM
title_short Microstructural Characterization of Ti-6Al-7Nb Alloy After Severe Plastic Deformation
title_full Microstructural Characterization of Ti-6Al-7Nb Alloy After Severe Plastic Deformation
title_fullStr Microstructural Characterization of Ti-6Al-7Nb Alloy After Severe Plastic Deformation
title_full_unstemmed Microstructural Characterization of Ti-6Al-7Nb Alloy After Severe Plastic Deformation
title_sort Microstructural Characterization of Ti-6Al-7Nb Alloy After Severe Plastic Deformation
author Gallego, Juno [UNESP]
author_facet Gallego, Juno [UNESP]
Pinheiro, Tiago Santos
Valiev, Ruslan Zufarovich
Polyakova, Veronika
Bolfarini, Claudemiro
Kiminami, Claudio Shyinti
Jorge, Alberto Moreira
Botta, Walter Jose
author_role author
author2 Pinheiro, Tiago Santos
Valiev, Ruslan Zufarovich
Polyakova, Veronika
Bolfarini, Claudemiro
Kiminami, Claudio Shyinti
Jorge, Alberto Moreira
Botta, Walter Jose
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade Federal de São Carlos (UFSCar)
Ufa State Aviat Tech Univ
dc.contributor.author.fl_str_mv Gallego, Juno [UNESP]
Pinheiro, Tiago Santos
Valiev, Ruslan Zufarovich
Polyakova, Veronika
Bolfarini, Claudemiro
Kiminami, Claudio Shyinti
Jorge, Alberto Moreira
Botta, Walter Jose
dc.subject.por.fl_str_mv Ti-6Al-7Nb alloy
ECAP
ultra-fine grained microstructure
XRD
TEM
topic Ti-6Al-7Nb alloy
ECAP
ultra-fine grained microstructure
XRD
TEM
description The ASTM F1295/Ti-6Al-7Nb alloy present mechanical properties and biocompatibility very attractive for application in medical and dental implants. In this context, processing of these Ti-based alloys by severe plastic deformation (SPD) has been extensively reported recently. However, the mechanical properties of equal channel angular pressed (ECAP) ASTM F1295 alloy are still a matter of research. In the present study, Ti-6Al-7Nb samples were processed by ECAP following thermomechanical processing which effects on the microstructure of Ti-6Al-7Nb alloy were investigated by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The analyses have shown that the microstructure was composed by ultrafine grains (UFG) with sizes ranging from 200 to 400 nm. Ring-type selected area electron diffraction patterns (SAEDP) suggested the co-existence of low- and high-angle grain boundaries. Some regions of the samples have presented evidences of the presence of grains with unfavorable orientation to the plastic deformation. These grains can act as rigid bodies and concentrate the deformation in its surrounding areas, as an "open-die grain" mechanism. Such deformation mechanism could be attributed to the differences in the plastic behavior between the alpha and beta titanium phases.
publishDate 2012
dc.date.none.fl_str_mv 2012-09-01
2014-05-20T13:29:25Z
2014-05-20T13:29:25Z
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://dx.doi.org/10.1590/S1516-14392012005000100
Materials Research-ibero-american Journal of Materials. São Carlos: Universidade Federal de São Carlos (UFSCar), Dept Engenharia Materials, v. 15, n. 5, p. 786-791, 2012.
1516-1439
http://hdl.handle.net/11449/9923
10.1590/S1516-14392012005000100
S1516-14392012000500016
WOS:000309191500016
S1516-14392012000500016.pdf
7193872294818689
0000-0002-5477-8139
url http://dx.doi.org/10.1590/S1516-14392012005000100
http://hdl.handle.net/11449/9923
identifier_str_mv Materials Research-ibero-american Journal of Materials. São Carlos: Universidade Federal de São Carlos (UFSCar), Dept Engenharia Materials, v. 15, n. 5, p. 786-791, 2012.
1516-1439
10.1590/S1516-14392012005000100
S1516-14392012000500016
WOS:000309191500016
S1516-14392012000500016.pdf
7193872294818689
0000-0002-5477-8139
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Materials Research-ibero-american Journal of Materials
1.103
0,398
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 786-791
dc.publisher.none.fl_str_mv Universidade Federal de São Carlos (UFSCar), Dept Engenharia Materials
publisher.none.fl_str_mv Universidade Federal de São Carlos (UFSCar), Dept Engenharia Materials
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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