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Structural mechanisms of plastic deformation in nanocrystalline materials

  • Defects, Dislocations, and Physics of Strength
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Abstract

A model of the initial stage of plastic deformation in nanomaterials is proposed. Within this model, the plastic deformation occurs through grain boundary microsliding (GBM). The accommodation processes accompanying the formation of GBM regions are considered. The relationships describing the regularities in the deformation behavior of nanomaterials and the dependence of the flow stress on the grain size are derived, and the temperature dependence of the GBM resistance stress is calculated. It is demonstrated that the results obtained are in good agreement with the experimental data.

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Authors and Affiliations

  1. Institute of Metal Physics and Functional Materials, Bardin Central Research Institute of Ferrous Metallurgy, Vtoraya Baumanskaya ul. 9/23, Moscow, 107005, Russia

    V. A. Pozdnyakov & A. M. Glezer

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  1. V. A. Pozdnyakov
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  2. A. M. Glezer
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__________

Translated from Fizika Tverdogo Tela, Vol. 44, No. 4, 2002, pp. 705–710.

Original Russian Text Copyright © 2002 by Pozdnyakov, Glezer.

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Pozdnyakov, V.A., Glezer, A.M. Structural mechanisms of plastic deformation in nanocrystalline materials. Phys. Solid State 44, 732–737 (2002). https://doi.org/10.1134/1.1470567

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