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- Ti-25Nb-25Mo alloy (1)
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The Ti-6Al-4V alloy is one of the common used titanium alloys in prosthetic applications, due to its significant proprieties, however, its wear performance is questionable, hence, the present study aims to
evaluate the wear resistance of a Nanostructured Ti-6Al-4V alloy manufactured via high energy ball milling, with varying milling duration
in order to investigate the correlation between surface proprieties and the wear performance of the alloy so as understanding its wear mechanisms.
The use of powder metallurgy techniques for manufacturing near net shape components for the biomedical field is on a continuous development. Evaluating the effect of different process parameters such as milling time on the properties of these newly developed alloys leads
to enhancing their properties, Hence, in this paper, the influence of structural parameters on the mechanical proprieties of a nanostructured Ti-6Al-4V alloy was investigated, considering the milling duration variation.
The main focus of this work is to investigate the impact of varying milling times (2 to 18 h) on the structural and mechanical properties of the developed Ti-Nb-Mo alloy. The morphology, phase composition, microstructure, and mechanical behavior of milled and sintered Ti-25Nb-25Mo alloy samples were characterized systematically using x-ray diffraction, scanning electron microscope, optical microscope, and Vicker microhardness. It was noted that the quantity of the β-Ti phase increased as the milling time increased. After 12 h of milling, the synthesized alloys exhibited a spherical morphology and texture with homogeneous distribution. The milled alloys' structural evolution and morphological changes were found to be dependent on their milling duration. Morphological analysis revealed that the crystallite size and mean pore size decreased when the milling duration increased, reaching minimum values of 51 nm and < 1 μm, after 12 and 18 h respectively. As the milling time increased, the grain size decreased, resulting in an increase in density, microhardness, and elastic modulus. Ti-25Nb-25Mo will presents good anti-wear ability and higher resistance to plastic deformation due to enhanced mechanical characteristics (H/E, and H3/E2). Hence, the developed Ti-25Nb-25Mo alloys with reduced elastic modulus and desirable mechanical properties were found to be a promising option for biomedical applications.