Features of Thermoelastic Martensitic Transformations in [001] Titanium-Nickel Single Crystals

摘要

Deformation in titanium-nickel polycrystals at T > M_s [M_s is the start temperature of the direct B2-B19' martensitic transformation (MT) upon cooling] leads to the formation of stress martensite, which is thermodynamically unstable at T > A_f (A_f is the finish temperature of the reverse B19'-B2 MT upon heating). If the direct B2-B19' MT under loading is not accompanied by plastic deformation, the reverse B19'-B2 MT occurs when the load is removed, and, s a result, the phenomenon of superelasticity is observed [1].