Influence of structure on mechanisms of VT22I titanium alloy deformation during implementation of shape memory effect

Abstract

The characteristics of the shape memory effect of the VT22I titanium alloy under torsional deformation have been investigated. The critical deformation (γcr0.3), at which 0.3% of unrecovered deformation accumulates, was used as the main characteristic of the effect. It is shown that in the VT22I alloy this value is 3—4 times less than in alloys based on NiTi, which is due to an intensive increase in resistance to movement of the interface «martensite—austenite» and low slip stresses in a disordered solid solution.