Chernov–Luders and Portevin–Le Chatelier Deformations in Active Deformable Media of Different Nature
L. B. Zuev
Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, Tomsk, 634055, Russia
Keywords: пластичность, деформация, локализация, полосы деформации, структура металлов, дефекты, дислокации, plasticity, deformation, localization, deformation bands, metal structure, defects, dislocations
Abstract
The development of macroscopic inhomogeneities in in the form of Chernov-Luders bands and jump-like deformation bands (Portevin–Le Chatelier effect) in plastic metal flow is studied. For these two cases, regularities in the development of deformation inhomogeneity were established, and the kinetics of motion of the fronts of Chernoff–Luders bands and jump-like deformation bands was studied. It is shown that the Chernov–Luders fronts and the jump-like Portevin–Le Chatelier deformation can be considered, respectively, as macroscopic self-oscillatory processes of switching and excitation in deformable media of different nature.
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