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Open AccessArticle

Autowave Physics of Material Plasticity

Institute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Science, Tomsk 634055, Russia
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Crystals 2019, 9(9), 458; https://doi.org/10.3390/cryst9090458
Received: 11 July 2019 / Revised: 20 August 2019 / Accepted: 30 August 2019 / Published: 2 September 2019
(This article belongs to the Special Issue Elasticity and Micro- and Macro- Plasticity of Crystals)
The notions of plastic flow localization are outlined in the paper. It is shown that each type of localized plasticity pattern corresponds to a definite stage of deformation hardening. In the course of plastic flow development, a changeover in the types of localization patterns occurs. The types of localization patterns are limited in number: four pattern types are all that can be expected. A correspondence was set up between the emergent localization pattern and the respective flow stage. It is found that the localization patterns are manifestations of the autowave nature of plastic flow localization process, with each pattern type corresponding to a definite mode of autowave. In the course of plastic flow development, the following modes of autowaves will form in the following sequence: switching autowave → phase autowave → stationary dissipative structure → collapse of the autowave. Of particular interest are the phase autowave and the respective pattern observed. Propagation velocity, dispersion, and grain size dependence of wavelength were determined experimentally for the phase autowave. An elastic-plastic strain invariant was also introduced to relate the elastic and plastic properties of the deforming medium. It is found that the autowave characteristics follow directly from this invariant. View Full-Text
Keywords: elasticity; plasticity; localization; crystal lattice; self-organization; autowave elasticity; plasticity; localization; crystal lattice; self-organization; autowave
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Zuev, L.B.; Barannikova, S.A. Autowave Physics of Material Plasticity. Crystals 2019, 9, 458.

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