Deriving the Grain Boundary Character Distribution and relative Energies from Three Dimensional EBSD Data (PREPRINT)

摘要

Three-dimensional electron backscattered diffraction data from a nickel-base super alloy has been analyzed to measure the geometric arrangement of grain boundary planes at triple junctions. This information has been used to calculate the grain boundary character distribution (GBCD) and the grain boundary energy distribution (GBED). The twin content from the three- dimensional GBCD calculation compares favorably with the twin content estimated by stereology. Important factors in the analysis are the alignment of the parallel layers, the ratio of the vertical to horizontal spacing, and the discretization of the domain of grain boundary types. The results show that the GBCD and GBED are inversely correlated.