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JOURNALS // Fizika Tverdogo Tela // Archive

Fizika Tverdogo Tela, 2022 Volume 64, Issue 8, Pages 1006–1011 (Mi ftt11084)

This article is cited in 1 paper

Mechanical properties, strength physics and plasticity

Autowave model of an elastic-plastic transition in a deformable medium

L. B. Zuev, V. I. Danilov

Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia

Abstract: The conditions for the generation of autowaves of localized plasticity during the elastic-plastic transition in solids are considered. The similarity and difference between the deformation processes according to the Luders and Portevin–Le Chatelier mechanisms are analyzed and an explanation of these regularities is proposed, based on the introduction of concepts of active deformable media capable of generating switching autowaves and excitation autowaves. The conditions for the formation of such autowaves and the quantitative characteristics of the processes responsible for the transition to plastic deformation are considered. The relationship between the autowave characteristics and the rate of stretching during mechanical tests has been elucidated.

Keywords: plasticity, dislocations, autowaves, Luders front, Portevin–Le Chatelier band.

Received: 11.05.2022
Revised: 16.05.2022
Accepted: 18.05.2022

DOI: 10.21883/FTT.2022.08.52698.311



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© Steklov Math. Inst. of RAS, 2025