Effect of Ta, Nb Content and Sintering Temperature on the Microstructure, Mechanical Properties and Sinterability of Ti-Nb-Ta Alloys

摘要

Various ternary and quaternary titanium alloys have been developed in the recent years to improve long term performance of biomedical implants. These alloying elements have difficult diffusion due to their refractory nature. The aim of this investigation is an attempt to study the effect of control factors on the response variables by using Design of Experiments (DOE) methodology. A combined technique using a DOE matrix with three factors, two levels for each factor and analysis of variance was performed to investigate the contribution and effects on the flexural strength and Young´s Modulus of the mentioned titanium alloys. The structural, mechanical and microstructure test were performed to characterize the Ti-Nb-Ta alloys.rnThe results revealed that the control factors had significant effect on how to obtain Beta Titanium alloys. The studied alloys present lower Young´s Modulus than Ti CP and Ti-6Al-4V, with good mechanical properties, being interesting as biomaterials.