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研究了试验温度、退火温度（ Ｔｈ） 及应力—应变循环对Ｔｉ５０ ．６Ｎｉ 合金弹簧超弹性（ＳＥ） 行为的影响。结果表明，冷拔态Ｔｉ５０ ．６Ｎｉ 合金中温退火后，热循环相变类型为Ａ→Ｒ→Ｍ←——— ，组织呈纤维状。该合金弹簧经６２３ ～７７３Ｋ 退火后，室温下可获得ＳＥ。随试验温度升高，弹簧刚度增加。Ｔｈ≥８２３Ｋ时，ＳＥ特性变坏。应力—应变循环初期，弹簧的切应力、切应变恢复率急剧衰减，随循环次数增加，衰减变慢。预循环训练可增强ＴｉＮｉ 合金弹簧超弹性的稳定性。
The experimental temperature, annealing temperature (Th) and stress-strain cycling on Ti50 were studied. 6Ni alloy spring super-elastic (SE) behavior. The results show that cold state Ti 50. 6Ni alloy after temperature annealing, the thermal cycling phase change type A → R → M ← ---, fibrous tissue. The alloy spring after 623 ~ 773K annealed at room temperature to obtain SE. As the test temperature increases, the spring stiffness increases. When Th ≧ 823K, the SE characteristic deteriorates. At the initial stage of stress-strain cycle, the shear stress of the spring and the rate of shear recovery decrease sharply. As the number of cycles increases, the attenuation decreases. Pre-cycle training can enhance the super-elastic stability of TiNi alloy springs.