Relation between Mechanical Milling Parameters in Phase Transformation and Oxygen Content in Ti-Nb-Mo Powders for Posterior Sintering
[EN] The influence of open vessels during milling for 12, 24, 40 and 60 h on microstructure homogeneity and oxygen content effect in the beta Ti-Nb-Mo system microstructure were studied. The beta phase increased with longer milling times and the strain hardening on particles was verified at 60 h whe...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/232119 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/232119 |
| Access Level: | acceso abierto |
| Palabra clave: | Mechanical alloying Beta titanium alloy Phase transformation Biomaterials 04.- Garantizar una educación de calidad inclusiva y equitativa, y promover las oportunidades de aprendizaje permanente para todos 08.- Fomentar el crecimiento económico sostenido, inclusivo y sostenible, el empleo pleno y productivo, y el trabajo decente para todos 10.- Reducir las desigualdades entre países y dentro de ellos 12.- Garantizar las pautas de consumo y de producción sostenibles |
| Sumario: | [EN] The influence of open vessels during milling for 12, 24, 40 and 60 h on microstructure homogeneity and oxygen content effect in the beta Ti-Nb-Mo system microstructure were studied. The beta phase increased with longer milling times and the strain hardening on particles was verified at 60 h when agglomeration was greater and was also noticed after 40 h in the continuous mode. Oxygen content dropped slightly until 40 h and increased after 60 h, a result linked with the observed hardening. For 40 h in the continuous mode, the oxygen content was noted near 12 h, 24 h and 40 h with high hardness values. For the sintered parts, the alpha phase and oxygen content significantly increased in all samples. Microhardness-sintered samples decreased compared to sample powders due to grain growth during the sintering. Bending strength was higher at 60 h with more oxygen and alpha phase content. After 40 h in the continuous mode, more suitable mechanical properties were reached because hardness and bending strength were closer to bone tissue, which was associated with strain hardening and a small crystallite size. |
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