Abstract
The temperature-rate dependences of strain resistance and the mechanisms of grain boundary sliding in Pb polycrystals and Pb-based alloys under active tension were investigated. The activation energy of plastic deformation and grain boundary sliding was determined. The structural mechanisms of grain boundary sliding were studied in a wide temperature range. The conclusion was made that self-consistency of grain boundary sliding and intragranular plastic flow has its origin in rotational deformation modes, with the grain boundary sliding being a primary process. Theoretical analysis of rotational deformation modes involved in grain boundary sliding was performed. It is shown that the dependence of deforming stress on the polycrystal grain size is impossible to describe by one universal Hall-Petch equation.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Gleiter, H. and Chalmers, D., High-Angle Grain Boundaries, Oxford: Pergamon Press, 1972.
Ashby, M.F., The deformation of plastically non-homogeneous material, Phil. Mag., 1970, vol. 21, pp. 399–424.
Meyers, M.A. and Chawla, K.K., Mechanical Metallurgy: Principles and Applications, Englewood Cliffs, N.J.: Prentice-Hall, 1984, pp. 688–731.
Kaibyshev, O.A., Superplasticity of Alloys, Intermetallides and Ceramics, Berlin: Spinger, 1992.
Panin, V.E. and Egorushkin, V.E., Deformable Solid as a Nonlinear Hierarchically Organized System, Phys. Mesomech., 2011, vol. 14, no. 5–6, pp. 207–223.
Elsukova, T.F. and Panin, V.E., The Effect of Scale Levels of Rotational Plastic Deformation Modes on the Strain Resistance of Polycrystals, Phys. Mesomech., 2010, vol. 13, no. 1–2, pp. 62–69.
Gertsriken, S.D. and Slyusar, B.F, Estimation of Vacancy Formation Energy and Vacancy Number in Pure Metals, Fiz. Met. Metalloved., 1958, vol. 6, pp. 1061–1065.
Egorushkin, V.E., Dynamics of Plastic Deformation. Localized Inelastic Strain Waves in Solids, Physical Mesomechanics of Heterogeneous Media and Computer-Aided Design of Materials, Cambridge: Cambridge Interscience Publishing, 1998, pp. 41–64.
Kozlov, E.V., Zhdanov, A.N., and Koneva, N.A., Barrier Retardation of Dislocations. Hall-Petch Problem, Phys. Mesomech., 2006, vol. 9, no. 3–4, pp. 75–85.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © V.E. Panin, V.E. Egorushkin, T.F. Elsukova, 2011, published in Fizicheskaya Mezomekhanika, 2011, Vol. 14, No. 6, pp. 15–22.
Rights and permissions
About this article
Cite this article
Panin, V.E., Egorushkin, V.E. & Elsukova, T.F. Physical mesomechanics of grain boundary sliding in a deformable polycrystal. Phys Mesomech 16, 1–8 (2013). https://doi.org/10.1134/S1029959913010013
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1029959913010013