Physical elastoplastic analysis of deformation of fee metals

The paper considers a model of elastoplastic deformation of single crystals that takes into account elastic and plastic anisotropy, intragranular dislocation glide, geometric nonlinearity, and rotation of a crystal lattice. An alternate solution for the problem of non-uniqueness in the choice of active slip systems is proposed. Available models in which lattice rotation is associated with quasirigid motion are analyzed. An algorithm of model realization for uniaxial tension and compression of single crystals is described and data of corresponding model calculations are analyzed.