Abstract
The authors introduce methods for obtaining two-point microstructure pair correlation functions and coherence length in polycrystalline material, using a set of oblique section planes around a fixed axis, and these are illustrated for a sample of alloy 304L stainless steel. A particular tessellation of the fundamental zone of Euler angle space is described; individual orientations of the data set are binned into discrete tesserae. Elementary relationships between the two-point pair correlation functions and coherence length and the grain size distribution are explored. A coherence plateau is evident in the statistical data and is shown to correlate with the magnitude of the invariant measure of the tesserae and the ratio of average grain size to scan length.
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