Caracterización microestructural de aleaciones Ti-Mo-X (Fe, Cr)
[EN] Titanium alloys are becoming harder due to the multitude of applications and uses that are being implemented in recent years. It is well known in alloys aerospace, sports equipment, automotive and biomedical sector in the field of implantology. Its high mechanical and especially their biocompat...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2015 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | español |
| OAI Identifier: | oai:riunet.upv.es:10251/64184 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/64184 |
| Access Level: | acceso abierto |
| Palabra clave: | leaciones Ti-Mo Pulvimetalurgia Elementos betágenos Ti-Mo Alloys Powder metallurgy Beta elements CIENCIA DE LOS MATERIALES E INGENIERIA METALURGICA Máster Universitario en Ingeniería Mecánica y Materiales-Màster Universitari en Enginyeria Mecànica i Materials |
| Sumario: | [EN] Titanium alloys are becoming harder due to the multitude of applications and uses that are being implemented in recent years. It is well known in alloys aerospace, sports equipment, automotive and biomedical sector in the field of implantology. Its high mechanical and especially their biocompatibility properties are the strengths of this type of alloys in this area. The project is carried out concerns the investigation of alloys Ti-15Mo, chosen according to their presumed beta and low elastic modulus. Molybdenum is a well-known beta element chosen for its ability to stabilize the beta phase, in addition to their good properties in terms of strength and toughness. Additionally, in order to expand the possibilities of stabilization of the beta phase, we decide to study the addition of small amounts of other beta elements such chromium and iron and study their influence on the mechanical parameters, relating them to their microstructure. The challenge of the work is to obtain specimens by working with powder technology. Powder metallurgy is one of the most interesting techniques for processing titanium because of its high reactivity and high melting temperature, which makes other techniques more expensive and opens a new window for the study of these alloys oriented use in biomedicine. The study results show a decrease in mechanical properties and an increase in brittleness when beta elements are added, results that are higher in the case of the addition of iron compared to the addition of chromium. While the percentage of beta phase increases in both cases with the addition of beta elements, this increase does not mean an increase in homogeneity. In case of the addition of chromium, the porosity remains unchanged compared with the Ti-15Mo alloy, while the addition of iron means that the porosity increases greatly with the appearance of sizeable macropores. |
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