|About this Abstract
||MS&T22: Materials Science & Technology
||Processing-Microstructure-Property Relationships of Titanium and Titanium Alloys
||Development of High Mechanical Strength and Low Elastic Modulus Ti-Nb-Fe-Sn-Zr Alloy for Orthopedic Implants
||Josimar AC Grippa, Mariana G Mello, Rubens Caram
|On-Site Speaker (Planned)
Ti-Nb-Fe-Sn-Zr alloys have been identified as promising biomaterials for application in orthopaedic implants owing to their relatively low cost, good biocompatibility, and high mechanical strength along with their interesting elastic properties. While the Ti-Nb-based alloys are candidate materials for manufacturing of orthopedic implant devices, the addition of Fe to them improves the mechanical strength. In the resulting Ti-Nb-Fe alloys, ω phase precipitation can be controlled by the addition of Sn or Zr. Understanding the phase transformations in the Ti-Nb-Fe-Sn-Zr alloys is essential for microstructural control and consequent optimization of mechanical behaviour. In this study, samples of Ti-19Nb-2.5Fe-3Sn-5Zr (wt.%) alloy were solution heat-treated and water-quenched resulting in a metastable β phase matrix with athermal ω phase precipitation. Phase transformations on aging were investigated. It was found that this alloy can show a yield strength close to 940 MPa and elastic modulus as low as 61 GPa.