Effects of Fe and Mo Content on the Microstructure and Mechanical Properties of Ti-Mo based alloys prepared by Elemental blend and Mechanical alloying technique

Abstract

[EN] Ti and its alloys are mostly used as biomaterials due to its unique properties like high corrosion resistance, low elastic modulus, high mechanical strength/ density ratio, good biocompatibility etc. Ti-β alloys based on the Ti-Mo alloy system shows much more interest for biomaterials. Addition of Zr and small amount of Fe improves the β-phase stability and improving the properties of Ti-Mo alloy. These alloys can be produced by powder metallurgy (PM) using Elemental Blend (EB) technique (600 MPa compaction pressure) and Mechanical Alloying (MA) technique with (600 and 900 MPa compaction pressure). This paper describes the microstructural characterization obtained by SEM and mechanical properties obtained by bending test, Archimedes test and ultrasonic test of Ti-Mo-Zr-Fe alloys made by elemental blend and Mechanical Alloying. Mechanical properties and Microstructure of these powder mixing processes also compared. The addition of small amounts of Fe further increases β-phase stability, improving the properties of Ti¿15Mo¿6Zr¿xFe alloy. In the search for a better implant material, Ti¿12Mo¿6Zr¿2Fe, with its low modulus, ductile property, and reasonably high strength, is a promising candidate.