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The Role of Σ9 Boundaries in Grain Boundary Engineering

  • Symposium: Structural Transitions and Local Deformation Processes at and near Grain Boundaries
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Abstract

In a grain-boundary-engineered (GBE) microstructure, Σ9 boundaries are the second most abundant boundary type. This article presents data showing that, in GBE copper, most Σ9s were special. Σ9 boundaries are also a geometrically necessary component of a GBE microstructure. It is suggested that there are competing requirements for Σ9s; during iterative GBE processing, they are required to be mobile, whereas afterward, it is desirable that they are special boundaries.

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Authors and Affiliations

  1. Materials Research Centre, School of Engineering, Swansea University, Swansea, SA28PP, UK

    V. Randle (Senior Academic), M. Coleman (Research Assistant) & M. Waterton (Research Student)

Authors
  1. V. Randle
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  2. M. Coleman
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  3. M. Waterton
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Correspondence to V. Randle.

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Manuscript submitted December 8, 2009.

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Randle, V., Coleman, M. & Waterton, M. The Role of Σ9 Boundaries in Grain Boundary Engineering. Metall Mater Trans A 42, 582–586 (2011). https://doi.org/10.1007/s11661-010-0302-7

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  • DOI: https://doi.org/10.1007/s11661-010-0302-7

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