Análise microestrutural da liga Ti-6Al-4V processada por Electron Beam Melting (EBM)
The process of manufacturing a prosthesis or orthopedic implant can influence the microstructural formation of the biomaterial that has the purpose of performing a certain function in the body. This functional material requires mechanical, physical and chemical properties that are obtained during th...
| Autor principal: | Atarasi, André Luiz |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/12241 |
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| Resumo: |
The process of manufacturing a prosthesis or orthopedic implant can influence the microstructural formation of the biomaterial that has the purpose of performing a certain function in the body. This functional material requires mechanical, physical and chemical properties that are obtained during the manufacturing process. The classes of materials that support and support the preparation of prostheses and implants are ceramic, polymeric and metallic materials. With the use of these materials and their characteristics, such as chemical composition, morphological structure and processing route, it is possible to obtain certain properties in the biomaterials, which are responsible for replacing or repairing a bone tissue of the human organism. Among the processing routes of these materials are lost wax casting, machining, isothermal forging and Electron Beam Melting (EBM). Through the EBM process, known as electron flow fusion, it is possible to obtain both the physical and mechanical properties required and the reproducibility of the components of prostheses and implants. The metallic materials most commonly used in the manufacture of dental implants and orthopedic prostheses are stainless steels, titanium alloys and cobalt-chromium alloys. It is known that the desired properties of a product are closely related to the morphology of the grains and are determined by the processing conditions and variables. The objective of this work is to perform the microstructural characterization of Ti-6Al-4V alloy specimens obtained by EBM, together with an analysis of the directional effect during the processing stage of the material, through optical microscopy, scanning electron microscopy and X rays diffraction. The results showed the presence of the α and β phases, with their respective stabilizing elements, columnar grains with growth along the direction of the processing, a low relative porosity, non-segregation formation and a difference in the average size of the crystallites, which is probably related to the direction of construction of the specimens. |
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