Disclinations at grain boundary triple junctions: Between Bollmann disclinations and Volterra disclinations

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Abstract

We discuss the question whether Bollmann's classification of triple junctions into I- and U-lines corresponds to a physical reality. We describe a virtual multiple junction of only small angle boundaries in two ways: First, by using Bollmann's I/U-line scheme (Bollmann disclinations) and second, by an elasticity approach (rotational Volterra cuts, Volterra disclinations). Depending on the number of boundaries, the multiple junction is found to be an I-line or a U-line. We conclude that the Bollmann disclination is a real crystallographic defect that is essentially different from the Volterra disclination.

Original languageEnglish
Pages (from-to)353-356
Number of pages4
JournalMaterials Science Forum
Volume294-296
StatePublished - 1999

Keywords

  • Disclinations
  • Grain Boundary
  • Triple Junctions

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