On the functional degradation of binary titanium-tantalum high-temperature shape memory alloys – A new concept for fatigue life extension
|authors:||T. Niendorf, P. Krooß, E. Batyrsina, A. Paulsen, J. Frenzel, G. Eggeler, H.J. Maier|
|publication:||Funct. Mater. Letters, Volume 7|
High-temperature shape memory alloys are promising candidates for actuator applications at elevated temperatures. Ternary nickel–titanium-based alloys either contain noble metals which are very expensive, or suffer from poor workability. Titanium–tantalum shape memory alloys represent a promising alternative if one can avoid the cyclic degradation due to the formation of the omega phase. The current study investigates the functional fatigue behavior of Ti–Ta and introduces a new concept providing for pronounced fatigue life extension.