(1. 四川大学 金属材料系， 成都 610065；
2. 四川大学 物理系， 成都 610065;
3. 中国科学院 上海硅酸盐研究所， 上海 200050)
摘 要: 用能量1.7MeV不同注量的电子辐照CuZnAl形状记忆合金样品，辐照在母相进行。DSC实验结果表明，辐照前后样品的相变温度As从339K升高到347K，Ms从330K升高到340?K，As-Ms从4K升高到7K。XRD分析结果表明辐照导致两组成对晶面间距差(Δd )增大，证明辐照促进了有序化。相变温度的变化是由于电子辐照产生的点缺陷造成了马氏体相点阵畸变和有序度的变化，从而产生马氏体稳定化。
关键字: 电子辐照； 形状记忆合金； 点缺陷； 马氏体相变； 马氏体稳定化
transition temperature of
CuZnAl shape memory alloys
（1. Department of Metal Material， Sichuan University， Chengdu 610065, P.R.China;
2. Department of Physics， Sichuan University， Chengdu 610065, P.R.China;
3. Institute of Ceramics， Chinese Academy of Sciences， Shanghai 200050，P.R.China）
Abstract:Specimens of CuZnAl shape memory alloys were irradiated by electron irradiation with an energy of 1.7MeV. DSC results show that As increases from 339K to 347K，Ms increases from 330K to 340?K and As-Ms raises 3K after irradiation. XRD results show that Δdincreases with irradiation. The point-defects induced by electron irradiation make the lattice distortion of martensite phase and the increase of the ordering degree which bring about the stabilization of martensite.
Key words: electron irradiation; CuZnAl shape memory alloys; martensitic transformation; martensitic stabilization; point defect
