Effect of molybdenum on structure, microstructure and mechanical properties of biomedical Ti-20Zr-Mo alloys
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.msec.2016.05.053 http://hdl.handle.net/11449/178038 |
Resumo: | Titanium has an allotropic transformation around 883 °C. Below this temperature, the crystalline structure is hexagonal close-packed (α phase), changing to body-centered cubic (β phase). Zirconium has the same allotropic transformation around 862 °C. Molybdenum has body-centered cubic structure, being a strong β-stabilizer for the formation of titanium alloys. In this paper, the effect of substitutional molybdenum was analyzed on the structure, microstructure and selected mechanical properties of Ti-20 Zr-Mo (wt%) alloys to be used in biomedical applications. The samples were prepared by arc-melting and characterized by x-ray diffraction with subsequent refinement by the Rietveld method, optical and scanning electron microscopy. The mechanical properties were analyzed by Vickers microhardness and dynamic elasticity modulus. X-ray measurements and Rietveld analysis revealed the presence of α′ phase without molybdenum, α′ + α″ phases with 2.5 wt% of molybdenum, α″ + β phases with 5 and 7.5 wt% of molybdenum, and only β phase with 10 wt% of molybdenum. These results were corroborated by microscopy results, with a microstructure composed of grains of β phase and lamellae and needles of α′ and α″ phase in intra-grain the region. The hardness of the alloy was higher than the commercially pure titanium, due to the action of zirconium and molybdenum as hardening agents. The samples have a smaller elasticity modulus than the commercially pure titanium. |
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Effect of molybdenum on structure, microstructure and mechanical properties of biomedical Ti-20Zr-Mo alloysBiomaterialMicrostructureTitanium alloysTitanium has an allotropic transformation around 883 °C. Below this temperature, the crystalline structure is hexagonal close-packed (α phase), changing to body-centered cubic (β phase). Zirconium has the same allotropic transformation around 862 °C. Molybdenum has body-centered cubic structure, being a strong β-stabilizer for the formation of titanium alloys. In this paper, the effect of substitutional molybdenum was analyzed on the structure, microstructure and selected mechanical properties of Ti-20 Zr-Mo (wt%) alloys to be used in biomedical applications. The samples were prepared by arc-melting and characterized by x-ray diffraction with subsequent refinement by the Rietveld method, optical and scanning electron microscopy. The mechanical properties were analyzed by Vickers microhardness and dynamic elasticity modulus. X-ray measurements and Rietveld analysis revealed the presence of α′ phase without molybdenum, α′ + α″ phases with 2.5 wt% of molybdenum, α″ + β phases with 5 and 7.5 wt% of molybdenum, and only β phase with 10 wt% of molybdenum. These results were corroborated by microscopy results, with a microstructure composed of grains of β phase and lamellae and needles of α′ and α″ phase in intra-grain the region. The hardness of the alloy was higher than the commercially pure titanium, due to the action of zirconium and molybdenum as hardening agents. The samples have a smaller elasticity modulus than the commercially pure titanium.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)UNESP Univ Estadual Paulista Laboratório de Anelasticidade e BiomateriaisIBTN/Br-Institute of Biomaterials Tribocorrosion and Nanomedicine, Brazilian BranchUSP Universidade de São Paulo Departamento de Ciências BiológicasUNESP Univ Estadual Paulista Laboratório de Anelasticidade e BiomateriaisUniversidade Estadual Paulista (Unesp)Tribocorrosion and NanomedicineUniversidade de São Paulo (USP)Kuroda, Pedro Akira Bazaglia [UNESP]Buzalaf, Marília Afonso RabeloGrandini, Carlos Roberto [UNESP]2018-12-11T17:28:19Z2018-12-11T17:28:19Z2016-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article511-515application/pdfhttp://dx.doi.org/10.1016/j.msec.2016.05.053Materials Science and Engineering C, v. 67, p. 511-515.0928-4931http://hdl.handle.net/11449/17803810.1016/j.msec.2016.05.0532-s2.0-849699168562-s2.0-84969916856.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Science and Engineering C1,110info:eu-repo/semantics/openAccess2024-04-25T17:39:39Zoai:repositorio.unesp.br:11449/178038Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:40:51.256242Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effect of molybdenum on structure, microstructure and mechanical properties of biomedical Ti-20Zr-Mo alloys |
title |
Effect of molybdenum on structure, microstructure and mechanical properties of biomedical Ti-20Zr-Mo alloys |
spellingShingle |
Effect of molybdenum on structure, microstructure and mechanical properties of biomedical Ti-20Zr-Mo alloys Kuroda, Pedro Akira Bazaglia [UNESP] Biomaterial Microstructure Titanium alloys |
title_short |
Effect of molybdenum on structure, microstructure and mechanical properties of biomedical Ti-20Zr-Mo alloys |
title_full |
Effect of molybdenum on structure, microstructure and mechanical properties of biomedical Ti-20Zr-Mo alloys |
title_fullStr |
Effect of molybdenum on structure, microstructure and mechanical properties of biomedical Ti-20Zr-Mo alloys |
title_full_unstemmed |
Effect of molybdenum on structure, microstructure and mechanical properties of biomedical Ti-20Zr-Mo alloys |
title_sort |
Effect of molybdenum on structure, microstructure and mechanical properties of biomedical Ti-20Zr-Mo alloys |
author |
Kuroda, Pedro Akira Bazaglia [UNESP] |
author_facet |
Kuroda, Pedro Akira Bazaglia [UNESP] Buzalaf, Marília Afonso Rabelo Grandini, Carlos Roberto [UNESP] |
author_role |
author |
author2 |
Buzalaf, Marília Afonso Rabelo Grandini, Carlos Roberto [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Tribocorrosion and Nanomedicine Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Kuroda, Pedro Akira Bazaglia [UNESP] Buzalaf, Marília Afonso Rabelo Grandini, Carlos Roberto [UNESP] |
dc.subject.por.fl_str_mv |
Biomaterial Microstructure Titanium alloys |
topic |
Biomaterial Microstructure Titanium alloys |
description |
Titanium has an allotropic transformation around 883 °C. Below this temperature, the crystalline structure is hexagonal close-packed (α phase), changing to body-centered cubic (β phase). Zirconium has the same allotropic transformation around 862 °C. Molybdenum has body-centered cubic structure, being a strong β-stabilizer for the formation of titanium alloys. In this paper, the effect of substitutional molybdenum was analyzed on the structure, microstructure and selected mechanical properties of Ti-20 Zr-Mo (wt%) alloys to be used in biomedical applications. The samples were prepared by arc-melting and characterized by x-ray diffraction with subsequent refinement by the Rietveld method, optical and scanning electron microscopy. The mechanical properties were analyzed by Vickers microhardness and dynamic elasticity modulus. X-ray measurements and Rietveld analysis revealed the presence of α′ phase without molybdenum, α′ + α″ phases with 2.5 wt% of molybdenum, α″ + β phases with 5 and 7.5 wt% of molybdenum, and only β phase with 10 wt% of molybdenum. These results were corroborated by microscopy results, with a microstructure composed of grains of β phase and lamellae and needles of α′ and α″ phase in intra-grain the region. The hardness of the alloy was higher than the commercially pure titanium, due to the action of zirconium and molybdenum as hardening agents. The samples have a smaller elasticity modulus than the commercially pure titanium. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-10-01 2018-12-11T17:28:19Z 2018-12-11T17:28:19Z |
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/10.1016/j.msec.2016.05.053 Materials Science and Engineering C, v. 67, p. 511-515. 0928-4931 http://hdl.handle.net/11449/178038 10.1016/j.msec.2016.05.053 2-s2.0-84969916856 2-s2.0-84969916856.pdf |
url |
http://dx.doi.org/10.1016/j.msec.2016.05.053 http://hdl.handle.net/11449/178038 |
identifier_str_mv |
Materials Science and Engineering C, v. 67, p. 511-515. 0928-4931 10.1016/j.msec.2016.05.053 2-s2.0-84969916856 2-s2.0-84969916856.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials Science and Engineering C 1,110 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
511-515 application/pdf |
dc.source.none.fl_str_mv |
Scopus 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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1808128549775736832 |