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Structural width of low-angle grain boundaries in olivine

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Abstract

Electron diffraction and imaging techniques have been used to examine the structure and thickness of low-angle grain boundaries in olivine. For edge-on grain boundaries, a periodic array of dislocations in a boundary gives rise to sets of periodic rods of diffracted intensity that are recorded as streaks in the diffraction pattern. The length of these streaks provides a measure of the structural width of a boundary. For olivine, the structural width of a boundary with a given dislocation spacing is three to four times smaller than that in metals where the boundary width is approximately equal to the spacing between dislocations in the boundary.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Cornell University, 14853, Ithaca, New York, USA

    D. L. Ricoult & D. L. Kohlstedt

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  1. D. L. Ricoult
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  2. D. L. Kohlstedt
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Ricoult, D.L., Kohlstedt, D.L. Structural width of low-angle grain boundaries in olivine. Phys Chem Minerals 9, 133–138 (1983). https://doi.org/10.1007/BF00308370

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  • DOI: https://doi.org/10.1007/BF00308370

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