Peculiarities of residual strain accumulation during thermal cycling of TiNi alloy

► Fraction of forward martensite transition influences accumulation of residual strain. ► If less than 50% of forward transition takes place then, no residual strain is found. ► If 75% and more of forward transition occur then residual strain is observed. ► Accommodation of martensite variants occurs elastically in the 50% of MT. ► Plastic accommodation takes place only in the last quarter of temperature range of MT.