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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampCaram Junior, Rubens-
dc.typeArtigopt_BR
dc.titleInfluence of Si addition on the microstructure and mechanical properties of Ti–35Nb alloy for applications in orthopedic implantspt_BR
dc.contributor.authorTavares, A.M.G.-
dc.contributor.authorRamos, W.S.-
dc.contributor.authorBlas, J.C.G. de-
dc.contributor.authorLopes, E.S.N.-
dc.contributor.authorCaram, R.-
dc.contributor.authorBatista, W.W.-
dc.contributor.authorSouza, S.A.-
dc.subjectLigas de titâniopt_BR
dc.subjectMicroestruturapt_BR
dc.subject.otherlanguageTitanium alloyspt_BR
dc.subject.otherlanguageMicrostructurept_BR
dc.description.abstractIn the development of new materials for orthopedic implants, special attention has been given to Ti alloys that show biocompatible alloy elements and that are capable of reducing the elastic modulus. Accordingly, Ti–Nb–Si alloys show great potential for application. Thus, this is a study on the microstructures and properties of Ti–35Nb–xSi alloys (x=0, 0.15, 0.35 and 0.55) (wt%) which were thermally treated and cooled under the following conditions: furnace cooling (FC), air cooling (AC), and water quenching (WQ). The results showed that Si addition is effective to reduce the density of omega precipitates making beta more stable, and to produce grain refinement. Silicides, referred as (Ti,Nb)3Si, were formed for alloys containing 0.55% Si, and its formation presumably occurred during the heating at 1000 °C. In all cooling conditions, the hardness values increased with the increasing of Si content, as a result from the strong Si solid solution strengthening effect, while the elastic modulus underwent a continuous reduction due to the reduction of omega precipitates in beta matrix. Lower elastic moduli were observed in water-quenched alloys, which concentration of 0.15% Si was more effective in their reduction, with value around 65 GPa. Regarding Ti–35Nb–xSi alloys (x=0, 0.15 and 0.35), the “double yield point” phenomenon, which is typical of alloys with shape memory effect, was observed. The increase in Si concentration also produced an increase from 382 MPa to 540 MPa in the alloys׳ mechanical strength. Ti–35Nb–0.55Si alloy, however, showed brittle mechanical behavior which was related to the presence of silicides at the grain boundarypt_BR
dc.relation.ispartofJournal of the mechanical behavior of biomedical materialspt_BR
dc.relation.ispartofabbreviationJ. mech. behav. biomed. mater.pt_BR
dc.publisher.cityAmsterdampt_BR
dc.publisher.countryPaíses Baixospt_BR
dc.publisherElsevierpt_BR
dc.date.issued2015-
dc.date.monthofcirculationNov.pt_BR
dc.language.isoengpt_BR
dc.description.volume51pt_BR
dc.description.firstpage74pt_BR
dc.description.lastpage87pt_BR
dc.rightsFechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn1751-6161pt_BR
dc.identifier.eissn1878-0180pt_BR
dc.identifier.doi10.1016/j.jmbbm.2015.06.035pt_BR
dc.identifier.urlhttps://www.sciencedirect.com/science/article/pii/S1751616115002428pt_BR
dc.description.sponsorshipCONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQpt_BR
dc.description.sponsordocumentnumber477340/2013-0pt_BR
dc.date.available2020-07-27T13:28:55Z-
dc.date.accessioned2020-07-27T13:28:55Z-
dc.description.provenanceSubmitted by Susilene Barbosa da Silva (susilene@unicamp.br) on 2020-07-27T13:28:55Z No. of bitstreams: 0. Added 1 bitstream(s) on 2021-01-07T20:41:19Z : No. of bitstreams: 1 000362603900007.pdf: 6261238 bytes, checksum: b643305c32890a85eb62a7d57e7c5df3 (MD5) Bitstreams deleted on 2021-01-08T14:11:06Z: 000362603900007.pdf,. Added 1 bitstream(s) on 2021-01-08T14:14:51Z : No. of bitstreams: 1 000362603900007.pdf: 6261238 bytes, checksum: b643305c32890a85eb62a7d57e7c5df3 (MD5) Bitstreams deleted on 2021-01-13T13:27:35Z: 000362603900007.pdf,. Added 1 bitstream(s) on 2021-01-13T13:30:38Z : No. of bitstreams: 1 000362603900007.pdf: 6261241 bytes, checksum: cceddaa6ef3429c02900a3e6e6ccc6cd (MD5)en
dc.description.provenanceMade available in DSpace on 2020-07-27T13:28:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2015en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/346138-
dc.contributor.departmentDepartamento de Engenharia de Manufatura e Materiaispt_BR
dc.contributor.unidadeFaculdade de Engenharia Mecânicapt_BR
dc.subject.keywordMechanical propertiespt_BR
dc.identifier.source000362603900007pt_BR
dc.creator.orcid0000-0001-6996-5116pt_BR
dc.type.formArtigo de pesquisapt_BR
dc.description.sponsorNoteThanks to CNPq (Grant no. 477340/2013-0). for the financial support and Prof. Hamish L. Fraser for making the FIB/TEM facilities in the CEMAS/Ohio State University availablept_BR
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