Caracterização metalúrgica e mecânica de ligas de Ti-Nb-Sn laminadas a quente para uso biomédico

Detalhes bibliográficos
Autor(a) principal: Sá, Dárcio Hersch Gomes de Souza
Data de Publicação: 2013
Tipo de documento: Tese
Idioma: por
Título da fonte: Repositório Institucional da UFS
Texto Completo: https://ri.ufs.br/handle/riufs/3544
Resumo: Titanium alloys with lower Young s modulus and free from toxic elements such as Al and V are being developed for biomedical applications. Ti-Nb-Sn alloys show great potential for this purpose. In this study, Ti-35Nb-XSn alloys (x = 2.5; 5.0; 7.5) were obtained from arc melting, homogenized, hot rolled and water quenched. The microstructures were characterized after each processing step by optical microscopy, scanning electron microscopy (SEM) and X-ray diffraction. Mechanical properties were determined by hardness tests, tensile tests, and ultrasonic technique to obtain the Young s modulus. These tests were performed in an attempt to compare the ductility and the strength to modulus ratio of the present alloys with those exhibited by other biomedical alloys whose properties are available in the literature. The mechanical behavior depends directly on the Sn amount as well as the phase constituents and it depends on the thermal and thermomechanical history to which the alloy was submitted. The hot rolled Ti-35Nb-2.5Sn alloy showed higher ductility and the strength to modulus ratio as high as those of some cold rolled Ti alloys.
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spelling Sá, Dárcio Hersch Gomes de Souzahttp://lattes.cnpq.br/4287371071093723Griza, Sandrohttp://lattes.cnpq.br/49781491352520802017-09-26T12:02:12Z2017-09-26T12:02:12Z2013-03-22https://ri.ufs.br/handle/riufs/3544Titanium alloys with lower Young s modulus and free from toxic elements such as Al and V are being developed for biomedical applications. Ti-Nb-Sn alloys show great potential for this purpose. In this study, Ti-35Nb-XSn alloys (x = 2.5; 5.0; 7.5) were obtained from arc melting, homogenized, hot rolled and water quenched. The microstructures were characterized after each processing step by optical microscopy, scanning electron microscopy (SEM) and X-ray diffraction. Mechanical properties were determined by hardness tests, tensile tests, and ultrasonic technique to obtain the Young s modulus. These tests were performed in an attempt to compare the ductility and the strength to modulus ratio of the present alloys with those exhibited by other biomedical alloys whose properties are available in the literature. The mechanical behavior depends directly on the Sn amount as well as the phase constituents and it depends on the thermal and thermomechanical history to which the alloy was submitted. The hot rolled Ti-35Nb-2.5Sn alloy showed higher ductility and the strength to modulus ratio as high as those of some cold rolled Ti alloys.Ligas de titânio de menor módulo de elasticidade com a supressão de elementos tóxicos como Al e V estão sendo desenvolvidas para aplicações biomédicas. As ligas de Ti-Nb-Sn surgem com grande potencial para esta finalidade. No presente estudo, ligas de Ti-35Nb-xSn (x = 2,5; 5,0; 7,5) foram obtidas por fusão a arco voltaico, solubilizadas a 1000°C por 12 horas, laminadas a quente e resfriadas em água. As microestruturas foram caracterizadas por microscopia ótica, microscopia eletrônica de varredura (MEV) e difração de raios-X. As propriedades mecânicas foram determinadas a partir de ensaios de dureza, ensaios de tração, e obtenção do módulo de elasticidade por meio de ultrassom. Estes testes foram executados com a finalidade de comparar essas propriedades com as exibidas por ligas comercialmente disponíveis e por outras ainda em estudo disponíveis na literatura. O desempenho mecânico das ligas depende diretamente das fases presentes e do tratamento termomecânico ao qual a liga foi submetida. A liga Ti-35Nb-2,5Sn exibiu a melhor correlação de propriedades além de elevada ductilidade.application/pdfporMateriaisLigas (Metalurgia)BiocompatibilidadeElasticidadeAlloysBiocompatibilityElasticityMaterialsCNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICACaracterização metalúrgica e mecânica de ligas de Ti-Nb-Sn laminadas a quente para uso biomédicoinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisPós-Graduação em Ciência e Engenharia de Materiaisinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFSinstname:Universidade Federal de Sergipe (UFS)instacron:UFSTEXTDARCIO_HERSCH_SA.pdf.txtDARCIO_HERSCH_SA.pdf.txtExtracted texttext/plain150267https://ri.ufs.br/jspui/bitstream/riufs/3544/2/DARCIO_HERSCH_SA.pdf.txt2d44d9dc9ee265ebf0ad64a25e68f108MD52THUMBNAILDARCIO_HERSCH_SA.pdf.jpgDARCIO_HERSCH_SA.pdf.jpgGenerated Thumbnailimage/jpeg1327https://ri.ufs.br/jspui/bitstream/riufs/3544/3/DARCIO_HERSCH_SA.pdf.jpg2d0a95214cfa40cfa41f9d0b3efeb08fMD53ORIGINALDARCIO_HERSCH_SA.pdfapplication/pdf3336188https://ri.ufs.br/jspui/bitstream/riufs/3544/1/DARCIO_HERSCH_SA.pdfd85f0992f63944ca634ac9109253156aMD51riufs/35442019-07-30 18:53:23.531oai:ufs.br:riufs/3544Repositório InstitucionalPUBhttps://ri.ufs.br/oai/requestrepositorio@academico.ufs.bropendoar:2019-07-30T21:53:23Repositório Institucional da UFS - Universidade Federal de Sergipe (UFS)false
dc.title.por.fl_str_mv Caracterização metalúrgica e mecânica de ligas de Ti-Nb-Sn laminadas a quente para uso biomédico
title Caracterização metalúrgica e mecânica de ligas de Ti-Nb-Sn laminadas a quente para uso biomédico
spellingShingle Caracterização metalúrgica e mecânica de ligas de Ti-Nb-Sn laminadas a quente para uso biomédico
Sá, Dárcio Hersch Gomes de Souza
Materiais
Ligas (Metalurgia)
Biocompatibilidade
Elasticidade
Alloys
Biocompatibility
Elasticity
Materials
CNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA
title_short Caracterização metalúrgica e mecânica de ligas de Ti-Nb-Sn laminadas a quente para uso biomédico
title_full Caracterização metalúrgica e mecânica de ligas de Ti-Nb-Sn laminadas a quente para uso biomédico
title_fullStr Caracterização metalúrgica e mecânica de ligas de Ti-Nb-Sn laminadas a quente para uso biomédico
title_full_unstemmed Caracterização metalúrgica e mecânica de ligas de Ti-Nb-Sn laminadas a quente para uso biomédico
title_sort Caracterização metalúrgica e mecânica de ligas de Ti-Nb-Sn laminadas a quente para uso biomédico
author Sá, Dárcio Hersch Gomes de Souza
author_facet Sá, Dárcio Hersch Gomes de Souza
author_role author
dc.contributor.author.fl_str_mv Sá, Dárcio Hersch Gomes de Souza
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/4287371071093723
dc.contributor.advisor1.fl_str_mv Griza, Sandro
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/4978149135252080
contributor_str_mv Griza, Sandro
dc.subject.por.fl_str_mv Materiais
Ligas (Metalurgia)
Biocompatibilidade
Elasticidade
topic Materiais
Ligas (Metalurgia)
Biocompatibilidade
Elasticidade
Alloys
Biocompatibility
Elasticity
Materials
CNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA
dc.subject.eng.fl_str_mv Alloys
Biocompatibility
Elasticity
Materials
dc.subject.cnpq.fl_str_mv CNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA
description Titanium alloys with lower Young s modulus and free from toxic elements such as Al and V are being developed for biomedical applications. Ti-Nb-Sn alloys show great potential for this purpose. In this study, Ti-35Nb-XSn alloys (x = 2.5; 5.0; 7.5) were obtained from arc melting, homogenized, hot rolled and water quenched. The microstructures were characterized after each processing step by optical microscopy, scanning electron microscopy (SEM) and X-ray diffraction. Mechanical properties were determined by hardness tests, tensile tests, and ultrasonic technique to obtain the Young s modulus. These tests were performed in an attempt to compare the ductility and the strength to modulus ratio of the present alloys with those exhibited by other biomedical alloys whose properties are available in the literature. The mechanical behavior depends directly on the Sn amount as well as the phase constituents and it depends on the thermal and thermomechanical history to which the alloy was submitted. The hot rolled Ti-35Nb-2.5Sn alloy showed higher ductility and the strength to modulus ratio as high as those of some cold rolled Ti alloys.
publishDate 2013
dc.date.issued.fl_str_mv 2013-03-22
dc.date.accessioned.fl_str_mv 2017-09-26T12:02:12Z
dc.date.available.fl_str_mv 2017-09-26T12:02:12Z
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dc.publisher.program.fl_str_mv Pós-Graduação em Ciência e Engenharia de Materiais
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reponame_str Repositório Institucional da UFS
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