Manufatura aditiva de aços maraging
Due to their unique characteristics, additive manufacturing techniques have a number of advantages in their use. Some of them are the fast modeling and the possibility to manufacture parts with complex geometry, requiring only a 3D CAD/CAM program. Thus, it is extremely important that these techniqu...
| Autor principal: | Furlan, João Paulo |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2022
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/29772 |
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| Resumo: |
Due to their unique characteristics, additive manufacturing techniques have a number of advantages in their use. Some of them are the fast modeling and the possibility to manufacture parts with complex geometry, requiring only a 3D CAD/CAM program. Thus, it is extremely important that these techniques can be applied to different types of raw materials, such as maraging steels, which are ultra-high strength steels, widely used in aeronautical and aerospace applications. This work initially carried out a literature review on maraging steels and, based on the literature, investigated the possibility of using maraging steels as raw material in additive manufacturing and, also compared the advantages and disadvantages of the two most promising techniques in relation to the conventional techniques. It was possible to conclude that the excellent properties of maraging steels come from the martensitic matrix and the presence of precipitates. Among the techniques analyzed, two proved to be promising: direct sintering of metal by laser and laser engineered net shaping, with the potential to be alternatives in the future to conventional techniques in the manufacture of certain products. In addition to these two, other techniques of interest were analyzed: electron beam fusion, which can be used for surface treatment; the binder jet technique for fabrication of cellular materials; and the layer lamination technique for joining metallic layers to form a metallic composite. Regarding metal powder production techniques, plasma atomization, to obtain titanium powders, and gas atomization, to produce powders from other alloying elements of maraging steels, provide spherical particles that contribute to the process of additive manufacturing. |
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