Gradient matrix method to image crystal curvature by processing of EBSD data and trial recognition of low-angle boundaries in IF steel

A gradient matrix has been introduced to derive the lattice orientation gradient, indicative of crystal substructures, from EBSD orientation data. A trial mapping of this term around a grain junction in a low deformed IF steel proves to reveal a distinct low-angle boundary extending from the junction line. The background dislocation substructure, however, is imaged rather poorly because of the mapping noise.