Spatiotemporal Ordering at Plastic Flow of Solids
L. B. Zuev, V. I. Danilov, B. S. Semukhin
Institute of Strength Physics and Materials Science SB RAS, 2/4 Akademicheskiy Ave., Tomsk, 634021, Russia
Received: 15.03.2002. Download: PDF
The initiation of spatially-ordered strain-localization patterns—waves which evolve with time—is investigated for a wide range of the deformed materials—metals and alloys. The main parameters of these waves, i.e. the propagation velocity against the work-hardening coefficient, dispersion law, and wavelength against the grain size and specimen length are determined. Consideration is given to the possibility of treating plastic-flow localization as a process of plastic flow occurring in a deformed medium. A set of equations is derived, which is appropriate for the description of the evolution of local strain nuclei. The changes of the local-strain pattern type, which are observed in the various stages of flow, are examined. A model is proposed to account for the large-scale periodicity manifested in the distribution of localized deformation.
Keywords: deformation, work-hardening, localization, self-organization, autowaves.
PACS: 05.45.Df, 05.70.Ln, 62.20.Fe, 62.50.+p, 81.40.Lm, 83.50.-v
Citation: L. B. Zuev, V. I. Danilov, and B. S. Semukhin, Spatiotemporal Ordering at Plastic Flow of Solids, Usp. Fiz. Met., 3, No. 3: 237—304 (2002) (in Russian), doi: 10.15407/ufm.03.03.237