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Effect of Molybdenum Content on Structural, Mechanical, and Tribological Properties of Hot Isostatically Pressed β-Type Titanium Alloys for Orthopedic Applications

  • Aiming to develop alloys with better properties for orthopedic applications, the focus of the present research was to evaluate the effect of Mo at.% content on structural, mechanical, and tribological properties of hot isostatically pressed Ti-xMo (x = 4, 8, 12, 15, and 20 at.%) alloys. The structural evolution, mechanical properties, and tribological behavior of the nanostructured Ti-xMo alloys were evaluated using x-ray diffraction, scanning electron microscope, and ball-on-disk tribometer. Wear tests were conducted under different applied loads of 2, 8, and 16 N. Experimental results indicated that the structural evolution and morphological changes of the milled alloys were sensitive to their molybdenum (Mo) content. The morphological characterization showed that the crystallite size and the particle size decreased with increasing Mo content (at.%) reaching the lowest values of 27 and 26 nm in the case of Ti-15Mo and Ti-20Mo, respectively. On the other hand, the coefficient of friction and wear rates were found to be decreasingAiming to develop alloys with better properties for orthopedic applications, the focus of the present research was to evaluate the effect of Mo at.% content on structural, mechanical, and tribological properties of hot isostatically pressed Ti-xMo (x = 4, 8, 12, 15, and 20 at.%) alloys. The structural evolution, mechanical properties, and tribological behavior of the nanostructured Ti-xMo alloys were evaluated using x-ray diffraction, scanning electron microscope, and ball-on-disk tribometer. Wear tests were conducted under different applied loads of 2, 8, and 16 N. Experimental results indicated that the structural evolution and morphological changes of the milled alloys were sensitive to their molybdenum (Mo) content. The morphological characterization showed that the crystallite size and the particle size decreased with increasing Mo content (at.%) reaching the lowest values of 27 and 26 nm in the case of Ti-15Mo and Ti-20Mo, respectively. On the other hand, the coefficient of friction and wear rates were found to be decreasing with increasing Mo content.show moreshow less

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Author: Mamoun Fellah, Naouel Hezil, Mohammed Abdul Samad, Ridha Djellabi, Alex Montagne, Alberto Mejias, Stephania Kossman, Alain Iost, Agung Purnama, Aleksei ObrosovORCiD, Sabine WeißORCiDGND
URL:https://link.springer.com/article/10.1007/s11665-019-04348-w
DOI:https://doi.org/10.1007/s11665-019-04348-w
ISSN:1059-9495
Title of the source (English):Journal of Materials Engineering and Performance
Document Type:Scientific journal article peer-reviewed
Language:English
Year of publication:2019
Tag:Ti-Mo alloy; friction behavior; hot isostatic pressing; milling; nanobiomaterials; tribology; wear resistance; β-type titanium alloy
Volume/Year:28
Issue number:10
First Page:5988
Last Page:5999
Faculty/Chair:Fakultät 3 Maschinenbau, Elektro- und Energiesysteme / FG Metallkunde und Werkstofftechnik
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