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运用原子间相互作用的对势模型计算了不同Nb，Al含量下Nb在TiAl点阵中不同无序占位和有序占位的能量，发现Nb在TiAl中占据Ti亚点阵，并且Nb和Al含量的增加有利于Nb原子的有序占位．
The energies of different disordered and ordered sites for Nb in TiAl lattice under different Nb and Al contents were calculated by using the potential-model of atomic interaction. It was found that Nb occupies Ti sub-lattice in TiAl, and Nb and The increase of Al content favors the ordered occupation of Nb atoms.