Abstract
Studies of triple junctions in f.c.c. polycrystalline material were carried out analytically and by computer modelling. An analysis of triple junction symmetry identified a group of triple junctions having at least a common axis, along with a subgroup of triple junctions having symmetry axes as common axes. Frequencies of occurrence of Coincident Axial Direction and Coincident Site Lattice triple junctions are assessed in both randomly oriented and fibre textured materials. Distributions of I- and U-line triple junctions are evaluated in randomly oriented and fibre textured materials, and in polycrystalline materials composed of CSL grain boundaries. Finally, and optimal three-dimensional polycrystalline material is proposed from a topological point of view.
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