It was recalled that 2 different causes led to the formation of 2 kinds of deformation-induced boundary. One was the statistical trapping of dislocations in incidental dislocation boundaries. The other was a difference in the activation of slip systems on each side of geometrically necessary boundaries. On the basis of these mechanisms, the occurrence of misorientations across both types of dislocation boundary was modelled using dislocation dynamics. The resultant evolution of the misorientation angles with strain was in good agreement with experimental observations. The theoretically obtained distribution functions for the misorientation angles described the experimental findings well, and explained their scaling behavior. The model also predicted correlations between misorientations in neighboring boundaries, for which some evidence existed.

Disorientations in Dislocation Structures - Formation and Spatial Correlation. W.Pantleon: Journal of Materials Research, 2002, 17[9], 2433-41