A THEORETICAL APPROACH TO GRAIN-BOUNDARY-CHARACTER-DISTRIBUTION (GBCD) IN TEXTURED POLYCRYSTALLINE MATERIALS

The knowledge of grain boundary character distribution (GBCD) is essen tial to understand the boundary-related properties of textured polycry stalline materials. In this paper a quantitative approach to the GBCD is described which permits a theoretical linkage with the will-known m isorientation density function (MODF). For illustration, the approach is applied to the study of orientation correlations in rapidly solidif ied and fully annealed Fe-6.5 mass% Si alloy ribbons. It is concluded that the observed orientation relationships of adjacent grains are det ermined to a large extent by the crystallographic texture.