Microstructural Characterization and Mechanical Properties of As-Cast Ti-12Mo-25Nb Biocompatible New Alloy

• Published in: Materials science forum Vol. 1012; pp. 466 - 470
• Main Authors: Nunes, Carlos Angelo, Azevedo Cossú, Caio Marcello Felbinger, de Almeida, Mariana Lima, de Almeida, Luiz Henrique, Borborema, Sinara
• Format: Journal Article
• Language: English
• Published: Trans Tech Publications Ltd 27.10.2020
• Subjects: Microstructural Characterization; Mechanical Properties; Titanium Alloys; Biomaterials
• ISSN: 0255-5476; 1662-9752; 1662-9752
• DOI: 10.4028/www.scientific.net/MSF.1012.466

The β-titanium alloys have properties such as low elastic modulus associated with good properties mechanical, higher corrosion resistance and biocompatibility properties ideal for orthopedic application. Recent studies showed that the traditional Ti–6Al–4V alloy (α+β type) presented biological toxicity due to the presence of Al and V in its composition. In this scenario the present work aims at the fabrication and characterization of the microstructure and the mechanical properties of the as–cast Ti-12Mo-25Nb alloy. This alloy was produced by arc melting with non-consumable tungsten electrode in argon atmosphere. The material was characterized by X–ray diffraction, optical microscopy, Vickers hardness and elastic modulus by impulse excitation. The results of the microstructural characterization showed the presence of the β single phase, hardness equal to 207HV and the elastic modulus equal to 77GPa. These characteristics shows that this alloy is suitable for biomedical application such as implants.