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利用建立在EAM（EmbeddedAtomMethod）势基础上的等效原子模型，计算了模拟非当量成分的Ni3Al基合金结构稳定性与长程有序（LRO）度的关系，结果说明：非当量成分下，Ni3Al基合金有序无序转变温度随Al含量的增加而上升；其有序无序转变为形核长大的非均匀转变过程，理论上不存在稳定的均匀部分有序结构；其介稳的部分状态组织为完全有序区和完全无序区的混合组织．该结果能解释实验中所观察到的Ni3Al基合金有序无序转变。
Based on the equivalent atomic model based on the EAM (EmbeddedAtomMethod) potential, the relationship between the structural stability and the LRO degree of Ni3Al-based alloys was simulated. The results show that under non-equivalent composition, Ni3Al-based The order and disorder transition temperature of the alloy increases with the increase of Al content. The order disorder changes into the non-uniform transformation process of nucleation and growth. Theoretically, there is no stable uniform part ordered structure. The metastable partial state Tissues are completely mixed and completely disorganized. This result can explain the orderly disorder transition of Ni3Al-based alloys observed in the experiment.