Influence of short time anneal on recoverable strain of beta III titanium alloy

Experiments have been carried out to study the effect of annealing parameters on the recoverable strain of the beta III titanium alloy. A heavily cold worked material was annealed at temperatures from 315 to 1080 °C for different times. The super-elastic property of the annealed sample was studied by cyclic tensile load testing. Optimized super-elastic property was achieved after short time annealing at temperatures around 800 °C. Increasing annealing temperature and time reduced the super-elastic strain and recoverable strain. It is believed that the large recoverable strain after the low temperature short time annealing benefits from the retained deformation texture and residual internal strain.