Análisis del efecto de los aleantes en titanio pulvimetalúrgico
[EN] Titanium alloys α + β, exhibit excellent specific mechanical properties and high corrosion resistance which makes them excellent candidates for application in different industrial sectors. The addition of refractory elements such as tantalum, niobium or molybdenum, play an important role in imp...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2014 |
| 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:10251/50025 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/50025 |
| Access Level: | acceso abierto |
| Palabra clave: | Pulvimetalurgia Aleaciones de titanio Oxidación Powder metallurgy Oxidation 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 α + β, exhibit excellent specific mechanical properties and high corrosion resistance which makes them excellent candidates for application in different industrial sectors. The addition of refractory elements such as tantalum, niobium or molybdenum, play an important role in improving the strength at elevated temperatures. Although the addition of these refractory elements, in high quantities, complicates the manufacture of these alloys due to the heterogeneity in the composition and involvement in phase transformations of the alloy. Powder metallurgy of titanium can be an interesting alternative to fusion in high vacuum as it enables increased productivity and the ability to manufacture near net shape parts. Although the uses of a lower temperature limit grain growth may be an important drawback for complete diffusion of the alloying elements. In this work we obtain α + β alloys Ti-3% at type is studied. X (Nb, Mo, Ta) by powder metallurgy from elemental powder mixture; processed under different compaction pressure, sintering temperature and time. Microstructural and mechanical characterization is performed with a specific analysis of their resistance to oxidation at temperatures of 900 ° C with dwell times of 200 minutes. The alloys exhibit good mechanical strength despite the obtained final porosity, which mainly affects the ductility. The resistance to oxidation is observed almost twice that for the CP Titanium. |
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