Bimodal Structures of Solids Obtained under Megaplastic Strain
- Authors: Metlov L.S.1,2, Brodova I.G.3, Tkachenko V.M.1, Petrova A.N.3, Shirinkina I.G.3
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Affiliations:
- Galkin Donetsk Physicotechnical Institute
- Donetsk National University
- Mikheev Institute of Metal Physics, Ural Branch
- Issue: Vol 118, No 12 (2017)
- Pages: 1255-1261
- Section: Structure, Phase Transformations, and Diffusion
- URL: https://journals.rcsi.science/0031-918X/article/view/166912
- DOI: https://doi.org/10.1134/S0031918X17120109
- ID: 166912
Cite item
Abstract
The evolution of the defect structure of aluminum alloys of different compositions under megaplastic strain at a high quasi-hydrostatic pressure has been studied. The theoretical analysis and numerical calculation of the evolution of the defect structure of solids (metals) under this impact have been performed within the three-defect model of nonequilibrium evolution thermodynamics. The calculation of defect kinetics shows that the presence of coarse grains submerged into a matrix of fine grains at specified parameters and coefficients leads to the additional generation of dislocations and, as a consequence, to the greater dislocation strengthening of a material.
About the authors
L. S. Metlov
Galkin Donetsk Physicotechnical Institute; Donetsk National University
Email: brodova@imp.uran.ru
Ukraine, ul. Rozy Luksemburg 72, Donetsk, 83114; ul. Shestisotletiya 21, Vinnitsa, 21021
I. G. Brodova
Mikheev Institute of Metal Physics, Ural Branch
Author for correspondence.
Email: brodova@imp.uran.ru
Russian Federation, ul. Sof’I Kovalevskoi 18, Ekaterinburg, 620137
V. M. Tkachenko
Galkin Donetsk Physicotechnical Institute
Email: brodova@imp.uran.ru
Ukraine, ul. Rozy Luksemburg 72, Donetsk, 83114
A. N. Petrova
Mikheev Institute of Metal Physics, Ural Branch
Email: brodova@imp.uran.ru
Russian Federation, ul. Sof’I Kovalevskoi 18, Ekaterinburg, 620137
I. G. Shirinkina
Mikheev Institute of Metal Physics, Ural Branch
Email: brodova@imp.uran.ru
Russian Federation, ul. Sof’I Kovalevskoi 18, Ekaterinburg, 620137