Abstract
Effects of single- and multi-step aging on mechanical properties and shape memory properties of Ti-6Mo-8A1 (mol%) biomedical shape memory alloy were studied using tensile tests at room temperature. As for the single-step aging, (1) pseudoelastic shape recovery by unloading was observed after aging at 623K, (2) the alloy became brittle after aging at 773K due to a) embrifflement, and (3) strength was improved with small shape memory effect by aging at 1023K. On the other hand, after a multistep aging at 773K-1023K-1123K, the alloy was strengthened and showed perfect shape recovery.
