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Wetting of grain boundaries (GB's) by liquid Cu in an Fe-30wt%Mn-10wt%Cu alloy has been studied as a function of the five macroscopic degrees of freedom (DoF's) of grain boundary character. These were chosen to consist of two grain boundary normals (or bounding planes) and a twist angle. The five DoF's of 975 GB's were determined by electron backscattering patterns and serial sectioning, after annealing...
Measurement of the geometry of triple junctions between grain boundaries in polycrystalline materials generates large sets of dihedral angles from which maps of the grain boundary energy may be extracted. A preliminary analysis has been performed for a sample of magnesia based on a three-parameter description of grain boundaries. An extended form of orientation imaging microscopy (OIM) was used to...
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