提供了一般界面上周期位错结构的矩阵方法和计算特殊界面位错结构的简易矢量方法。

A matrix method is provided for calculating the periodic dislocation structures in general interfaces, and a vector method is given for calculating the dislocation structure in special interfaces.

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在基体与析出相的界面上存在高密度位错堆积，从而引起基体金属亚结构细化。

High density dislocation pile-up lies in the interface of the matrix and the second phase, which induces the sub-structure fining of the matrix.

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结果表明，弱界面有阻碍位错运动、偏转主裂纹扩展方向的作用，可形成分层断口。

The results showed that the weak interface can block the motion of the dislocations and change the propagation direction of the main crack, and result in forming lamella fracture surface.

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