本文采用一个简单模型，在仅计质量无序的情况下，由CPA方法讨论了超晶格中界面两侧原子的互扩散对其声子结构的影响。
With a simple model and only considering the mass disorder, we have discussed the effect of interface diffusion on the phonon structure of superlattices by means of CPA method.
观察了增强扩散与剩余缺陷和晶格恢复之间的关系。
We have studied the relations of the enhanced diffusion to residual defects and lattice restoration in detail.
该合金的蠕变由晶格自扩散引起的位错攀移所控制。
The creep deformation is controlled by dislocation climb resulting from lattice self-diffusion.
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