Abstract
A review of the continuum theory for defects in nanoscaled materials is given. The critical behavior of dislocations in small particles and nanograins is considered. Elastic characteristics of dislocations in multilayer nanostructures and dislocations near the tips of wedge-shaped areas are discussed. The role of disclinations in the formation of nanoparticles with pentagonal symmetry is analysed. Specific nanequilibrium state of grain boundaries which is the reason of strong elastic distortions in nanophase materials is considered together with defects generated in junctions and nodes of grain boundaries. Finally, some applications of the continuum theory of defects to the explanation of mechanical properties of nanophase materials are listed.
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