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Interaction of lattice dislocations with periodic grain boundary structures

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Abstract

Some recent discussions have centred on the mechanism by which lattice dislocations are absorbed by grain boundaries at high temperatures. Boundaries in two well-characterized coincidence site lattice systems have been studied using an electron microscope hot stage. The dislocation behaviour was shown to be consistent with a description based on dissociation and reactions involving grain boundary dislocations. A model of grain boundary migration based on the motion of grain boundary dislocations depends on both the boundary crystallography and the temperature, and may account for experimental measurements of grain boundary migration activation volumes.

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Author notes

  1. W. A. T. Clark

    Present address: Department of Metallurgical Engineering, Michigan Technical University, 49931, Houghton, MI, USA

Authors and Affiliations

  1. Department of Metallurgy and Science of Materials, University of Oxford, Parks Road, Oxford, UK

    W. A. T. Clark & D. A. Smith

Authors
  1. W. A. T. Clark
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  2. D. A. Smith
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Clark, W.A.T., Smith, D.A. Interaction of lattice dislocations with periodic grain boundary structures. J Mater Sci 14, 776–788 (1979). https://doi.org/10.1007/BF00550708

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  • DOI: https://doi.org/10.1007/BF00550708

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