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Journal Science Intensive Technologies №7 for 2010 г.
Article in number:
Simulation of the flexible glide dislocation motion through chaotic ensembles of dislocation loops
Keywords: information technologies dislocations radiation defects physical interaction
Authors:
Yu.S. Belov, Min Min Aung, B.M. Loginov
Abstract:
The simulation of the flexible glide dislocation motion through the chaotic ensemble of edge dislocation loops under strict calculation of the fine structure of inner stress fields for the crystals with hexagonal closed packed crystals have been realized. The simulation was executed in quasi-static approach by finding sequences of the flexible glide dislocation configurations interacting with ensembles dislocation loops under gradually increasing level of external stress. It was established, that during its motion, under certain level of external stress, the glide dislocation configurational elements achieved surplus local curvature that leads to interacting dislocation loops involving in a joint motion and due to that the critical shear stress at which the glide dislocation overcome the model volume decreases. The analysis of influence of the Paierls barrier value on the characteristics of the effect dislocation loops sweeping, critical shear stress decreasing, relative dislocation loops ensemble softening and per cent of dislocation loops involving in joint motion have been carried out.
Pages: 17-23
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