Nucleation of crack is due to dislocation pile-up mechanism and elastic anisotropy mechanism.
裂纹形核主要是通过位错堆积、晶界角源及弹性各向异性三种机理产生的。
This verifies the existence of dislocation pile-up and its stimulation to the nucleation of microcracks.
证实了位错塞积的存在及其对微裂纹形核的促进作用。
The defects include cracks, color center, inclusions, step-faceting, low-angle boundaries and dislocation pile-up group.
这些缺陷包括：包裹物，色心，开裂，台阶面，位错，小角晶界和位错塞积群。
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.
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.
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。
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