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用能量为 1.7MeV不同注量的电子辐照了 TiNi形状记忆合金，通过温度控制使辐照在合金的马氏体相进行，发现辐照使合金的马氏体逆相变开始温度 A s和结束温度 A f降低，且 A f对电子辐照更敏感，相变温度滞后宽度减小；马氏体相变开始温度 M s和结束温度 M f基本无变化。 XRD结果表明电子辐照造成了马氏体相点阵畸变，随辐照注量的增加有增大的趋势，并且较大注量的晶面间距都增大。说明辐照引入的点缺陷增加了马氏体弹性应变能使马氏体相稳定性降低，造成了马氏体逆相变温度的下降。
The TiNi shape memory alloy was irradiated with 1.7MeV electron with different fluence, and the irradiation was controlled by the temperature in the martensite phase of the alloy. It was found that the initial martensitic transformation temperature A s and The ending temperature A f decreases, and A f is more sensitive to electron irradiation, and the hysteresis width of phase transition temperature decreases. The martensite transformation start temperature M s and end temperature M f are basically unchanged. The XRD results show that the lattice distortion of martensite phase caused by electron irradiation tends to increase with the increase of irradiation fluence, and the interplanar spacings of larger fluence increase. It shows that the point defects introduced by irradiation increase the martensitic elastic strain and decrease the stability of the martensite phase, resulting in the decrease of the martensitic transformation temperature.