Inelastic rotations and pseudo-turbulent plastic avalanches in crystals
arXiv:2203.08711 · doi:10.1103/PhysRevE.107.025004
Abstract
Plastic deformations in crystals often produce textures in the form of randomly oriented patches of the unstressed lattice. We use a novel mesoscopic Landau-type model of crystal plasticity to show that in such textures large crystallographic lattice rotations can originate from a highly coordinated inelastic slip at the microscale. Our numerical experiments show that dislocation avalanches, which lead to the formation of such rotations, involve pseudo-turbulent motions with power-law distributed spatial correlations.
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