2017 Volume 64 Issue 8 Pages 428-435
The recrystallization behavior of pure iron powder cores during the annealing process core is visualized with the Grain Orientation Spread (GOS) map from an SEM/EBSD analysis, and found to be significantly inhomogeneous, leading to an inhomogeneous dislocation density distribution. Nevertheless, a conventional dislocation pinning model well describes the coercive force behavior if the average dislocation density is applied. The pinning model is modified to separate the influence of the grain boundary pinning, and the relationship between the coercive force and the microstructure is discussed comprehensively.
