Abstract
Experiments have been carried out to study the effect of annealing and cold work (CW) on the mechanical properties of beta III Ti alloy. Material was annealed at different temperatures above the beta transformation temperature, and then cold drawn to about 53% area reduction. Cyclic tensile test was performed to study the evolution of mechanical properties and the recoverable strain during process. Results show that the effect of annealing and CW is closely related to the stress-induced martensite (SIM) phase transformation. Lower annealing temperature results in higher strength and recoverable strain, which is further increased by CW. A total recoverable strain of ~3.2% was obtained from the annealed and CW sample.
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