Sample records for alloy-vt22

  1. Study of deformation mechanisms in forming and heating shape memory titanium alloys

    Wire specimens of a typical shape memory alloy Ti - 50.6 % (at.) Ni as well as commercial alloys VT22I and Ti-10-2-3 were used to investigate the mechanisms of inelasticity at various stages of manifestation of shape memory effect. The investigation results show that the process of forming in titanium nickelide and titanium base alloys can proceed according to martensitic, combined and dislocation mechanisms. Mechanism changing takes place at the first and the second critical deformation degree respectively. The values of critical strains are determined by the nature of phases participating in martensitic transformation and by the structural state of alloys