|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Biological Materials Science
||Effect of Nb and Ta Content on Properties of Ti-(26-35)Nb-(0-6)Ta-7Zr -0.7O
||Dalibor Preisler, Josef Stráský, Michal Landa, Petr Harcuba
|On-Site Speaker (Planned)
Biocompatible alloying system Ti-Nb-Zr-Ta-O has been thoroughly studied in last two decades with the aim to develop a material suitable for large joint endoprostheses manufacturing. These alloys can retain pure bcc β phase after quenching from the β region. Rarely studied alloys with oxygen content higher than 0.5 wt.% show enhanced strength, but also increased elastic modulus which could result in unwanted stress-shielding effect in bone. Elastic modulus grows also with stability of β phase in this metastable system, i.e. with increasing Nb and Ta content. Several alloys with 0.7 wt.% of oxygen and reduced Nb and Ta content were designed and fabricated. Microstructure and phase composition were studied in solution treated condition by means of scanning electron microscopy. Mechanical properties at room temperature were determined by microhardness measurements, tensile testing and resonant ultra-sound spectroscopy (measurement of the elastic constants).
||Planned: Supplemental Proceedings volume