Abstract
The energy of grain boundary (GB) with non-equilibrium structure caused by trapped lattice dislocations (TLD's) and TLD dissociation products — extrinsic grain boundary dislocations (EGBD's) — are estimated. The process of GB structure recovery, i.e. transition of non-equilibrium GB structure into equilibrium state, is analysed on the basis of the model of TLD dissociation into EGBD's and EGBD uniform distribution in GB. A process of this type appears to be energetically favoured for GB's of any type. The kinetics of the recovery of GB structure which is of diffusional character is considered. The differences in TLD stability in various GB's are caused by kinetic reasons. In the process of TLD absorption GB's possess non-stationary structure, which is of great importance for GB behaviour during deformational processes. A comparison between the results obtained and known experimental data is made. [Russian Text Ignored].
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