Synthesis and characterization of new superelastic and low elastic modulus Ti-Nb-X alloys for biomedical application.
Résumé
Ti-Nb based alloys are well known to their good mech. properties, shape memory effect, superelasticity, as well as good biocompatibility. The Ti-24Nb (at%) binary alloy presents a shape memory behavior and low elastic modulus. Our study is focused on the improvement of their mech. properties by adding a third alloying element (oxygen, nitrogen or silicon). Addn. of 0.5 at% of N or O modifies drastically the mech. behavior of Ti-24Nb alloy that exhibits superelastic behavior instead of shape memory one. On the other hand, addn. of 0.5 at% of Si increased yield strength of the Ti-24Nb shape memory alloy. [on SciFinder(R)]