Inelastic rotations and plastic turbulence
Résumé
Plastic deformations in crystals often produce textures in the form of randomly oriented patches of the unstressed lattice. We use a novel mesoscopic Landau model of crystal plasticity to show that in such textures particularly large crystallographic lattice rotations originate from inelastic slip at the microscale. Our numerical experiments suggest that the process of the formation of plastic textures is inherently unstable and involves quasi-turbulent motions with power-law distributed spatial correlations.
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