Influência da taxa de resfriamento no módulo de elasticidade de ligas beta Ti e obtenção de diagramas CCT
Ano de defesa: | 2019 |
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Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de São Carlos
Câmpus São Carlos |
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEM
|
Departamento: |
Não Informado pela instituição
|
País: |
Não Informado pela instituição
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | https://repositorio.ufscar.br/handle/ufscar/14244 |
Resumo: | The metallic alloys used as orthopedic implants, such as the Ti-6Al-4V, present some problems of biological and mechanical compatibility. In addition, the great difference between the elastic modulus of human bone and the commercial alloys used as implants is responsible for the stress-shielding effect. In this way, the objective of this study was to obtain CCT diagrams through dilatometry of β-Ti alloys and to investigate the influence of the cooling rate by comparing the microstructure and properties (microhardness and elastic modulus) for Ti-40Nb (Ti40Nb) and Ti-12Mo-6Zr-2Fe (TMZF) alloys. For this, besides the alloy as received, it was yield the following cooling rates: 103 oC/s for rapidly solidified (SR condition); 102 oC/s for water quenche; 5 oC/s for air cooling and 0.05 oC/s for furnace cooling. Afterwards all the samples were submitted to the microstructural characterization through X-ray diffraction (XRD), optical microscopy (OM) and scanning electron microscopy (SEM). Physical property of elastic modulus E (GPa) was measured via impulse excitation technique while the mechanical property was assessed using Vickers microhardness. Finally, the thermal characterization was performed by differential scanning calorimetry (DSC) and dilatometry. For the SR condition, which showed the lowest values of elastic modulus and Vickers microhardness, the presence of β-Ti (bcc) and α” (martensite) phases for both alloys and the values of modulus and elasticity and Vickers hardness, respectively, with 56 GPa and 144HV for the Ti40Nb (SR), 74GPa and 333HV for the TMZF (SR) alloy. For lowest cooling rate (furnace), the results showed the presence of β and α phases for both alloys, and values of E = 83 GPa and 302 HV for the Ti40Nb alloy and 106 GPa and 443 HV for the TMZF alloy. Based on these results, together with the results of the DSC test and dilatometry, it was possible to build real CCT diagram for both alloys. |
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Santos, Rafael Formenton Macedo dosAfonso, Conrado Ramos Moreirahttp://lattes.cnpq.br/2176215981291453Munoz Chaves, Javier Andreshttp://lattes.cnpq.br/1205198307049324http://lattes.cnpq.br/46330700625588871c8a9dfe-b4bc-4ffc-a680-5b76d10c693d2021-05-08T08:58:27Z2021-05-08T08:58:27Z2019-07-31SANTOS, Rafael Formenton Macedo dos. Influência da taxa de resfriamento no módulo de elasticidade de ligas beta Ti e obtenção de diagramas CCT. 2019. Dissertação (Mestrado em Ciência e Engenharia de Materiais) – Universidade Federal de São Carlos, São Carlos, 2019. Disponível em: https://repositorio.ufscar.br/handle/ufscar/14244.https://repositorio.ufscar.br/handle/ufscar/14244The metallic alloys used as orthopedic implants, such as the Ti-6Al-4V, present some problems of biological and mechanical compatibility. In addition, the great difference between the elastic modulus of human bone and the commercial alloys used as implants is responsible for the stress-shielding effect. In this way, the objective of this study was to obtain CCT diagrams through dilatometry of β-Ti alloys and to investigate the influence of the cooling rate by comparing the microstructure and properties (microhardness and elastic modulus) for Ti-40Nb (Ti40Nb) and Ti-12Mo-6Zr-2Fe (TMZF) alloys. For this, besides the alloy as received, it was yield the following cooling rates: 103 oC/s for rapidly solidified (SR condition); 102 oC/s for water quenche; 5 oC/s for air cooling and 0.05 oC/s for furnace cooling. Afterwards all the samples were submitted to the microstructural characterization through X-ray diffraction (XRD), optical microscopy (OM) and scanning electron microscopy (SEM). Physical property of elastic modulus E (GPa) was measured via impulse excitation technique while the mechanical property was assessed using Vickers microhardness. Finally, the thermal characterization was performed by differential scanning calorimetry (DSC) and dilatometry. For the SR condition, which showed the lowest values of elastic modulus and Vickers microhardness, the presence of β-Ti (bcc) and α” (martensite) phases for both alloys and the values of modulus and elasticity and Vickers hardness, respectively, with 56 GPa and 144HV for the Ti40Nb (SR), 74GPa and 333HV for the TMZF (SR) alloy. For lowest cooling rate (furnace), the results showed the presence of β and α phases for both alloys, and values of E = 83 GPa and 302 HV for the Ti40Nb alloy and 106 GPa and 443 HV for the TMZF alloy. Based on these results, together with the results of the DSC test and dilatometry, it was possible to build real CCT diagram for both alloys.Atualmente as diferentes ligas metálicas utilizadas como implantes ortopédicos (Ti-6Al-4V e aços inoxidáveis) apresentam problemas de compatibilidade biológica e mecânica. Além disso, a grande diferença entre os módulos de elasticidade do osso humano e das ligas comerciais utilizadas para confecção de implantes é responsável pelo efeito “stress-shielding”. O objetivo deste estudo foi obter os diagramas CCTs através de dilatometria e investigar a influência da taxa de resfriamento através de comparação da microestrutura, microdureza e módulo de elasticidade das ligas β-Ti: Ti-40Nb (Ti40Nb) e Ti-12Mo-6Zr-2Fe (TMZF). Assim utilizou-se a liga como recebida (condição EBM) e submetidas as taxas de resfriamento de: 103 oC/s (condição SR); 102 oC/s (condição H2O); 5 oC/s (condição Ar) e 0,05 oC/s (Forno). As amostras foram submetidas à caracterização microestrutural via DRX, MO e MEV. O módulo de elasticidade foi avaliado via excitação por impulso enquanto que a dureza foi avaliada através de microdureza Vickers. Por fim, as análises térmicas foram realizadas através de calorimetria diferencial de varredura e dilatometria. Para a condição SR, detectaram-se as fases β-Ti e martensita α’’ para ambas as ligas e os valores de módulo e microdureza, respectivamente, de 56 GPa e 144HV para a liga Ti40Nb (SR), 74GPa e 333 HV para a liga TMZF (SR). Na condição Forno, com as fases de equilíbrio β e α para ambas as ligas, e, respectivamente, E = 83 GPa e 302 HV para as ligas Ti40Nb e de 106 GPa e 443 HV para a TMZF. Com estes resultados, juntamente com os resultados dos ensaios de DSC e dilatometria, foi possível construir diagramas CCT para ambas as ligas. Os diagramas CCT confirmaram que a liga Ti40Nb é β estável (β-transus ~540oC) com taxas de resfriamento ≥ 0,5oC/s, comparada com a liga TMZF (β-transus ~700oC) com taxas ≥ 101 a 102 oC/s.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)CAPES: Código de Financiamento 001CNPq: 139294/2018-0porUniversidade Federal de São CarlosCâmpus São CarlosPrograma de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEMUFSCarAttribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessLigas β-TiDiagrama CCTMódulo de elasticidadeTaxa de resfriamentoCaracterização microestruturalβ-Ti alloysCCT diagramElastic modulusCooling rateMicrostructural characterizationENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICAInfluência da taxa de resfriamento no módulo de elasticidade de ligas beta Ti e obtenção de diagramas CCTInfluence of the cooling rate on elastic modulus of beta alloys and acquisition of CCT diagramsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis60060013dc14f5-a2ff-412c-b48e-56a4bda35ecareponame:Repositório Institucional da UFSCARinstname:Universidade Federal de São Carlos (UFSCAR)instacron:UFSCARORIGINALRafael Formenton Macedo dos Santos - Dissertação.pdfRafael Formenton Macedo dos Santos - Dissertação.pdfDissertaçãoapplication/pdf4160390https://repositorio.ufscar.br/bitstream/ufscar/14244/1/Rafael%20Formenton%20Macedo%20dos%20Santos%20-%20Disserta%c3%a7%c3%a3o.pdfc7b0a8ddcbb3ca53c2635fa6511c9a0cMD51BCO carta comprovante autoarquivamento.pdfBCO carta comprovante autoarquivamento.pdfCarta comprovante de autoarquivamentoapplication/pdf422586https://repositorio.ufscar.br/bitstream/ufscar/14244/2/BCO%20carta%20comprovante%20autoarquivamento.pdf9e75b5857d1bf4caf0bbe68fd69818abMD52CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8811https://repositorio.ufscar.br/bitstream/ufscar/14244/3/license_rdfe39d27027a6cc9cb039ad269a5db8e34MD53TEXTRafael Formenton Macedo dos Santos - Dissertação.pdf.txtRafael Formenton Macedo dos Santos - Dissertação.pdf.txtExtracted texttext/plain162956https://repositorio.ufscar.br/bitstream/ufscar/14244/4/Rafael%20Formenton%20Macedo%20dos%20Santos%20-%20Disserta%c3%a7%c3%a3o.pdf.txtf31f06d88025eac4ee4d60becb03bc62MD54BCO carta comprovante autoarquivamento.pdf.txtBCO carta comprovante autoarquivamento.pdf.txtExtracted texttext/plain1496https://repositorio.ufscar.br/bitstream/ufscar/14244/6/BCO%20carta%20comprovante%20autoarquivamento.pdf.txte5333e907384b7580eff9ea15d1a88a7MD56THUMBNAILRafael Formenton Macedo dos Santos - Dissertação.pdf.jpgRafael Formenton Macedo dos Santos - Dissertação.pdf.jpgIM Thumbnailimage/jpeg6321https://repositorio.ufscar.br/bitstream/ufscar/14244/5/Rafael%20Formenton%20Macedo%20dos%20Santos%20-%20Disserta%c3%a7%c3%a3o.pdf.jpg6bd0e5d50c89aa5bd2c180fbe7eadc77MD55BCO carta comprovante autoarquivamento.pdf.jpgBCO carta comprovante autoarquivamento.pdf.jpgIM Thumbnailimage/jpeg9982https://repositorio.ufscar.br/bitstream/ufscar/14244/7/BCO%20carta%20comprovante%20autoarquivamento.pdf.jpgf9a0c12b5a35a444c704bacae976c8a6MD57ufscar/142442023-09-18 18:32:10.511oai:repositorio.ufscar.br:ufscar/14244Repositório InstitucionalPUBhttps://repositorio.ufscar.br/oai/requestopendoar:43222023-09-18T18:32:10Repositório Institucional da UFSCAR - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.por.fl_str_mv |
Influência da taxa de resfriamento no módulo de elasticidade de ligas beta Ti e obtenção de diagramas CCT |
dc.title.alternative.eng.fl_str_mv |
Influence of the cooling rate on elastic modulus of beta alloys and acquisition of CCT diagrams |
title |
Influência da taxa de resfriamento no módulo de elasticidade de ligas beta Ti e obtenção de diagramas CCT |
spellingShingle |
Influência da taxa de resfriamento no módulo de elasticidade de ligas beta Ti e obtenção de diagramas CCT Santos, Rafael Formenton Macedo dos Ligas β-Ti Diagrama CCT Módulo de elasticidade Taxa de resfriamento Caracterização microestrutural β-Ti alloys CCT diagram Elastic modulus Cooling rate Microstructural characterization ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA |
title_short |
Influência da taxa de resfriamento no módulo de elasticidade de ligas beta Ti e obtenção de diagramas CCT |
title_full |
Influência da taxa de resfriamento no módulo de elasticidade de ligas beta Ti e obtenção de diagramas CCT |
title_fullStr |
Influência da taxa de resfriamento no módulo de elasticidade de ligas beta Ti e obtenção de diagramas CCT |
title_full_unstemmed |
Influência da taxa de resfriamento no módulo de elasticidade de ligas beta Ti e obtenção de diagramas CCT |
title_sort |
Influência da taxa de resfriamento no módulo de elasticidade de ligas beta Ti e obtenção de diagramas CCT |
author |
Santos, Rafael Formenton Macedo dos |
author_facet |
Santos, Rafael Formenton Macedo dos |
author_role |
author |
dc.contributor.authorlattes.por.fl_str_mv |
http://lattes.cnpq.br/4633070062558887 |
dc.contributor.author.fl_str_mv |
Santos, Rafael Formenton Macedo dos |
dc.contributor.advisor1.fl_str_mv |
Afonso, Conrado Ramos Moreira |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/2176215981291453 |
dc.contributor.advisor-co1.fl_str_mv |
Munoz Chaves, Javier Andres |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/1205198307049324 |
dc.contributor.authorID.fl_str_mv |
1c8a9dfe-b4bc-4ffc-a680-5b76d10c693d |
contributor_str_mv |
Afonso, Conrado Ramos Moreira Munoz Chaves, Javier Andres |
dc.subject.por.fl_str_mv |
Ligas β-Ti Diagrama CCT Módulo de elasticidade Taxa de resfriamento Caracterização microestrutural |
topic |
Ligas β-Ti Diagrama CCT Módulo de elasticidade Taxa de resfriamento Caracterização microestrutural β-Ti alloys CCT diagram Elastic modulus Cooling rate Microstructural characterization ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA |
dc.subject.eng.fl_str_mv |
β-Ti alloys CCT diagram Elastic modulus Cooling rate Microstructural characterization |
dc.subject.cnpq.fl_str_mv |
ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA |
description |
The metallic alloys used as orthopedic implants, such as the Ti-6Al-4V, present some problems of biological and mechanical compatibility. In addition, the great difference between the elastic modulus of human bone and the commercial alloys used as implants is responsible for the stress-shielding effect. In this way, the objective of this study was to obtain CCT diagrams through dilatometry of β-Ti alloys and to investigate the influence of the cooling rate by comparing the microstructure and properties (microhardness and elastic modulus) for Ti-40Nb (Ti40Nb) and Ti-12Mo-6Zr-2Fe (TMZF) alloys. For this, besides the alloy as received, it was yield the following cooling rates: 103 oC/s for rapidly solidified (SR condition); 102 oC/s for water quenche; 5 oC/s for air cooling and 0.05 oC/s for furnace cooling. Afterwards all the samples were submitted to the microstructural characterization through X-ray diffraction (XRD), optical microscopy (OM) and scanning electron microscopy (SEM). Physical property of elastic modulus E (GPa) was measured via impulse excitation technique while the mechanical property was assessed using Vickers microhardness. Finally, the thermal characterization was performed by differential scanning calorimetry (DSC) and dilatometry. For the SR condition, which showed the lowest values of elastic modulus and Vickers microhardness, the presence of β-Ti (bcc) and α” (martensite) phases for both alloys and the values of modulus and elasticity and Vickers hardness, respectively, with 56 GPa and 144HV for the Ti40Nb (SR), 74GPa and 333HV for the TMZF (SR) alloy. For lowest cooling rate (furnace), the results showed the presence of β and α phases for both alloys, and values of E = 83 GPa and 302 HV for the Ti40Nb alloy and 106 GPa and 443 HV for the TMZF alloy. Based on these results, together with the results of the DSC test and dilatometry, it was possible to build real CCT diagram for both alloys. |
publishDate |
2019 |
dc.date.issued.fl_str_mv |
2019-07-31 |
dc.date.accessioned.fl_str_mv |
2021-05-08T08:58:27Z |
dc.date.available.fl_str_mv |
2021-05-08T08:58:27Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
SANTOS, Rafael Formenton Macedo dos. Influência da taxa de resfriamento no módulo de elasticidade de ligas beta Ti e obtenção de diagramas CCT. 2019. Dissertação (Mestrado em Ciência e Engenharia de Materiais) – Universidade Federal de São Carlos, São Carlos, 2019. Disponível em: https://repositorio.ufscar.br/handle/ufscar/14244. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufscar.br/handle/ufscar/14244 |
identifier_str_mv |
SANTOS, Rafael Formenton Macedo dos. Influência da taxa de resfriamento no módulo de elasticidade de ligas beta Ti e obtenção de diagramas CCT. 2019. Dissertação (Mestrado em Ciência e Engenharia de Materiais) – Universidade Federal de São Carlos, São Carlos, 2019. Disponível em: https://repositorio.ufscar.br/handle/ufscar/14244. |
url |
https://repositorio.ufscar.br/handle/ufscar/14244 |
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Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ info:eu-repo/semantics/openAccess |
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Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ |
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openAccess |
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Universidade Federal de São Carlos Câmpus São Carlos |
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Programa de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEM |
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UFSCar |
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Universidade Federal de São Carlos Câmpus São Carlos |
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