On the theory of dislocation free zone, crack tip emitted the dislocations , which piled up the tangled in ahead of the intermetallic compounds.
根据位错贫化带理论，裂纹尖端发射的位错将在沉淀析出的金属间化合物前塞积和缠结。
The basic idea of this new model is that cavity nucleation during creep deformation depends not only on the stress concentration of piled-up group of dislocations, but also vacancy clustering.
该模型不但考虑了位错塞和所产生的应力集中的作用，同时也考虑了空位聚集的作用。
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