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

Autor: González-Guillén, Celia, Al Hawajreh Kamel, Ghaith, Degalez-Duran, Eduardo, Klyatskina, Elizaveta, Naeem, Muhammad, Romero-Resendiz, Liliana, Gonzalez, Gonzalo, Amigó Borrás, Vicente
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Zdroj: Materials (1996-1944); Dec2023, Vol. 16 Issue 23, p7362, 11p
Abstrakt: 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. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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