在本文中,向Ti-50.7at.%Ni合金分别加入1at.%的稀土元素Ce、Dy、Gd和Y,并利用X射线和示差扫描热分析研究了稀土掺杂对富Ni的Ti-Ni合金马氏体相变行为的影响。结果表明:向富Ni的Ti-Ni合金中添加稀土元素能使合金的马氏体相变温度显著增加,且添加稀土Ce使合金相变温度的增幅最大。此外,Ti-50.2Ni-1Gd和Ti-50.2Ni-1Y合金中发生两步马氏体相变,而添加Ce和Dy的Ti-Ni合金中仍只发生一步马氏体相变。 In this paper, 1at.% Of rare earth elements Ce, Dy, Gd and Y were added to Ti-50.7at.% Ni alloy respectively. The effect of rare earth doping on the Ni-rich Ti-Ni Effect of Alloy Martensite Transformation Behavior. The results show that the addition of rare earth elements to the Ni-rich Ti-Ni alloy can significantly increase the martensitic transformation temperature of the alloy, and the addition of rare earth Ce maximizes the phase transition temperature of the alloy. In addition, two-step martensitic transformation took place in Ti-50.2Ni-1Gd and Ti-50.2Ni-1Y alloys, while one-step martensitic transformation still occurred in Ti-Ni alloys with addition of Ce and Dy.