研究了热处理对TiNi合金回复稳定性能的影响。结果表明,马氏体相变温度Msσ和Mfσ随热机械循环次数增加而上升,而马氏体逆相变温度Asσ和Afσ随热机械循环次数的增加而下降。随着热机械循环次数的增加,相变温度逐步稳定。退火温度小于500℃,热机械循环下TiNi合金的回复性能稳定,退火温度达550℃时,TiNi合金组织长大,应力诱发马氏体变形时容易发生滑移,回复应变随热机械循环次数增加而下降,回复稳定性能变差。 The effect of heat treatment on the recovery stability of TiNi alloy was studied. The results show that the Ms and Mfσ martensitic transformation temperatures increase with the increase of the number of thermomechanical cycles, while the inverse transformation temperature Asσ and Afσ of martensite decrease with the increase of the number of thermomechanical cycles. As the number of thermomechanical cycles increases, the phase transition temperature is gradually stabilized. The annealing temperature is less than 500 ℃, and the mechanical properties of TiNi alloy are stable. When the annealing temperature is up to 550 ℃, the TiNi alloy grows easily and the stress-induced martensitic deformation tends to slip. The recovery strain increases with the number of thermal mechanical cycles The decline, the stability of the return deterioration.