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The Effect of Ti/Ta Ratio and Processing Routes on the Hardness and Elastic Modulus of Porous TiNbZrTa Alloys.

Gonzalez-Guillen, C., Al Hawajreh Kamel, G., Degalez-Duran, E., Klyatskina, E., Naeem, M., Romero Resendiz, L., Gonzalez, G. and Amigo Borras, V., 2023. The Effect of Ti/Ta Ratio and Processing Routes on the Hardness and Elastic Modulus of Porous TiNbZrTa Alloys. Materials, 16 (23), 7362.

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DOI: 10.3390/ma16237362

Abstract

TiNbZrTa alloys are promising for multidisciplinary applications, such as refractory and biomedical purposes, due to their high thermal stability and non-toxicity. Hardness and elastic modulus are among the key features for their adequate industrial applications. The influence of porosity and Ti/Ta ratio were investigated on TiNbZrTa alloys produced by three different processing routes, i.e., (i) blend element and posterior press and sintering (BE + P&S); (ii) mechanical alloying with press and sintering (MA + P&S); and (iii) arc melting and casting. Porosity decreased in the following order: casting < MA + P&S < BE + P&S. The total porosity of alloys increased with increasing Ta contents, i.e., by lowering the Ti/Ta ratio. However, the Ti/Ta ratio did not considerably affect the bonding energy or the elastic modulus. Hardness was increased significantly in dense alloys compared to porous ones. However, porosity and Ti/Ta ratio did not show a clear trend in hardness among the porous alloys.

Item Type:Article
ISSN:1996-1944
Uncontrolled Keywords:Blen element; Casting; High-entropy alloy; Impulse excitation technique; Mechanical alloying; Mechanical properties; Porosity; Powder metallurgy
Group:Faculty of Science & Technology
ID Code:39337
Deposited By: Symplectic RT2
Deposited On:08 Jan 2024 10:41
Last Modified:08 Jan 2024 10:41

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