Effects of Sn Content and Aging Conditions on Superelasticity in Biomedical Ti–Mo–Sn Alloys

Abstract

The effects of Sn content and aging conditions on superelasticity in Ti–Mo–Sn alloys were investigated. Martensitic transformation temperature decreased with an increasing of Sn content. A large superelastic strain of 3.0% was obtained in a solution-treated Ti–5 mol%Mo–5 mol%Sn alloy in the tensile test. The superelasticity in the Ti–5 mol%Mo–5 mol%Sn at room temperature was improved by aging at 873 K for short periods between 180 and 420 s. A specimen aged at 873 K for 300 s exhibited superelasticity with a recovery strain of 3.5% in the tensile test. A recovery strain of 3.0% was consistently achieved in cyclic tensile deformations.