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Changes in grain boundary misorientation caused by emission of dislocation pairs

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Abstract

A new geometric micromechanism responsible for changes in the misorientation of grain boundaries in the course of (super)plastic deformation is proposed. According to this, the misorientation changes as a result of the motion of grain-boundary disclinations accompanied by the emission of lattice dislocation pairs. Within the framework of the proposed model, the energy characteristics of the motion of grain-boundary disclinations are calculated.

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Authors and Affiliations

  1. Institute of Problems of Mechanical Engineering, Russian Academy of Sciences, St. Petersburg, Russia

    M. Yu. Gutkin, I. A. Ovid’ko & N. V. Skiba

Authors
  1. M. Yu. Gutkin
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  2. I. A. Ovid’ko
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  3. N. V. Skiba
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Additional information

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Translated from Pis’ma v Zhurnal Tekhnichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 28, No. 10, 2002, pp. 78–82.

Original Russian Text Copyright © 2002 by Gutkin, Ovid’ko, Skiba.

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Gutkin, M.Y., Ovid’ko, I.A. & Skiba, N.V. Changes in grain boundary misorientation caused by emission of dislocation pairs. Tech. Phys. Lett. 28, 437–438 (2002). https://doi.org/10.1134/1.1482760

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  • DOI: https://doi.org/10.1134/1.1482760

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