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Article

Development of a TiNbTaMoZr-Based High Entropy Alloy with Low Young´s Modulus by Mechanical Alloying Route

1
SIGMA Clermont, 63178 Aubière, France
2
Departamento de Física de la Materia Condensada, Universidad de Sevilla, 41080 Sevilla, Spain
3
Instituto Andaluz del Patrimonio Histórico (IAPH), 41092 Sevilla, Spain
4
Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, Universidad de Sevilla, 41092 Sevilla, Spain
*
Author to whom correspondence should be addressed.
Metals 2020, 10(11), 1463; https://doi.org/10.3390/met10111463
Received: 14 October 2020 / Revised: 28 October 2020 / Accepted: 29 October 2020 / Published: 1 November 2020
(This article belongs to the Special Issue Microstructural Engineering in Metallic Materials)
In this work, an equiatomic TiNbTaMoZr-based high-entropy alloy (HEA) has been developed by a powder metallurgy route, which consists of a process of combined one-step low-temperature mechanical milling starting from the transition metals as raw materials and a subsequent pressureless sintering. In this way, the optimized synthesized specimen, after 10 h of milling time, showed two different body-centered cubic (bcc) TiNbTaMoZr alloys, which, after sintering at 1450 °C, 1 h of dwell time and a heating and cooling rate of 5 °C min−1, it remained formed as two bcc TiNbTaMoZr-based HEAs. This material, with micrometric and equiaxed particles, and with homogeneously distributed phases, presented a Young’s modulus that was significantly higher (5.8 GPa) and lower (62.1 GPa) than that of the usual commercially pure (cp) Ti and Ti6Al4V alloy used for bone-replacement implants. It also presented similar values to those of the HEAs developed for the same purpose. These interesting properties would enable this TiNbTaMoZr-based HEA to be used as a potential biomaterial for bulk or porous bone implants with high hardness and low Young´s modulus, thereby preventing the appearance of stress-shielding phenomena. View Full-Text
Keywords: high-entropy alloys; titanium; biomaterials; bone tissue engineering; mechanical alloying; Young’s modulus high-entropy alloys; titanium; biomaterials; bone tissue engineering; mechanical alloying; Young’s modulus
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MDPI and ACS Style

Normand, J.; Moriche, R.; García-Garrido, C.; Sepúlveda Ferrer, R.E.; Chicardi, E. Development of a TiNbTaMoZr-Based High Entropy Alloy with Low Young´s Modulus by Mechanical Alloying Route. Metals 2020, 10, 1463. https://doi.org/10.3390/met10111463

AMA Style

Normand J, Moriche R, García-Garrido C, Sepúlveda Ferrer RE, Chicardi E. Development of a TiNbTaMoZr-Based High Entropy Alloy with Low Young´s Modulus by Mechanical Alloying Route. Metals. 2020; 10(11):1463. https://doi.org/10.3390/met10111463

Chicago/Turabian Style

Normand, Juliette, Rocío Moriche, Cristina García-Garrido, Ranier E. Sepúlveda Ferrer, and Ernesto Chicardi. 2020. "Development of a TiNbTaMoZr-Based High Entropy Alloy with Low Young´s Modulus by Mechanical Alloying Route" Metals 10, no. 11: 1463. https://doi.org/10.3390/met10111463

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