Scale invariance of plastic deformation of the planar and crystal subsystems of solids under superplastic conditions
- Authors: Egorushkin V.E.1, Panin V.E.1
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Affiliations:
- Institute of Strength Physics and Materials Science, Siberian Branch
- Issue: Vol 20, No 1 (2017)
- Pages: 1-9
- Section: Article
- URL: https://journals.rcsi.science/1029-9599/article/view/191883
- DOI: https://doi.org/10.1134/S1029959917010015
- ID: 191883
Cite item
Abstract
The theory of structural transformations in the planar sybsystem (surface layers and internal interfaces) of solids under plastic deformation is developed. The theory is based on a consideration for local curvature of the crystal lattice, with new structural states arising in its interstices, responsible for plastic distortion. To satisfy the superplastic condition, such high-rate mechanisms should develop in both planar and 3D crystal subsystems. In a translation-invariant crystal, this condition is met by concentration fluctuations. The multiscale criterion of superplasticity is formulated based on the scale invariance of plastic deformation of the planar and crystal subsystems in a deformable solid. Beyond the criterion, superplasticity passes to the creep mode with restricted plasticity of the material.
About the authors
V. E. Egorushkin
Institute of Strength Physics and Materials Science, Siberian Branch
Email: paninve@ispms.tsc.ru
Russian Federation, Tomsk, 634055
V. E. Panin
Institute of Strength Physics and Materials Science, Siberian Branch
Author for correspondence.
Email: paninve@ispms.tsc.ru
Russian Federation, Tomsk, 634055