Grain Boundary Properties in Three Dimensions

摘要: Current efforts to characterize grain boundary networks in three dimensions are reviewed for both serial sectioning and synchrotron analysis. Results on boundary populations from stereological analysis are compared with analysis of true 3 D networks. Correlations of boundary type at triple lines are discussed, including both misorientations and boundary normals. The boundary networks are also analyzed to extract dihedral angles and calculate grain boundary energy as a function of the five-parameter type. The energy anisotropy is compared to theoretical results, where available. Although the energy is generally inverse to the population, there are non-trivial variations from this rule. The measured microstructures also provide instantiations for simulations of properties. The heterogeneity of plastic deformation provides an example of such a microstructure-property relationship.