Abstract
The relative energies of subboundaries were obtained, in terms of a reference large-angle grain boundary, in aluminum bicrystals having two different effective impurity concentrations. The data for subboundary energy versus subgrain orientation difference (θ) showed a cusp at [Formula: see text]. The existence of such a cusp was previously predicted by Martius and Chalmers from considerations of impurity effects at boundaries.
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