Artículo
Manufacturing optimisation of an original nanostructured (beta + gamma)-TiNbTa material
Autor/es | García Garrido, Cristina
Gutierrez-Gonzalez, C.F. Torrecillas, Ramón Pérez Pozo, Luis Salvo, Christopher Chicardi Augusto, Ernesto |
Departamento | Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte |
Fecha de publicación | 2019 |
Fecha de depósito | 2019-08-08 |
Publicado en |
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Resumen | An original (beta + gamma)-TiNbTa material was manufactured by an optimised powder metallurgy treatment, based on a mechanical alloying (MA) synthesis, carried out at low energy, and a subsequently field assisted consolidation ... An original (beta + gamma)-TiNbTa material was manufactured by an optimised powder metallurgy treatment, based on a mechanical alloying (MA) synthesis, carried out at low energy, and a subsequently field assisted consolidation technique, the pulsed electric current sintering (PECS). The successful development of this (beta + gamma)-TiNbTa material was possible by the optimisation of the milling time (60 h) for the MA synthesis and the load and sintering temperature for the PECS (30 MPa and 1500 °C), as key parameters. Furthermore, the selected heating and cooling rates were 500 °C min−1 and free cooling, respectively, to help maintain the lowest particle size and to avoid the formation of a detrimental high stiffness, hexagonal (alpha)-Ti alloy. All these optimised experimental conditions enabled the production of a full densified (beta + gamma)-TiNbTa material, with partially nanostructured areas and two TiNbTa alloys, with a body centred cubic (beta) and a novel face-centred cubic (gamma) structures. The interesting microstructural characteristics gives the material high hardness and mechanical strength that, together with the known low elastic modulus for the beta-Ti alloys, makes them suitable for their use as potential biomaterials for bone replacement implants. |
Identificador del proyecto | 2017/833 |
Cita | García Garrido, C., Gutierrez-Gonzalez, C.F., Torrecillas, R., Pérez Pozo, L., Salvo, C. y Chicardi Augusto, E. (2019). Manufacturing optimisation of an original nanostructured (beta + gamma)-TiNbTa material. Journal of Materials Research and Technology, 8 (3), 2573-2585. |
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