Influence of the Primary Recrystallization Texture on Abnormal Grain Growth of Goss Grains in Grain Oriented Electrical Steels

摘要

Goss texture development in high permeability grain oriented electrical steel (HGO) and conventional grain oriented electrical steel (CGO) was compared through the analysis of the primary recrystallization texture. Texture and microstructure of the specimens were analyzed using Orientation Distribution Function (ODF) calculated from X-ray diffraction, optical microscopy and OM (Orientation Imaging Microscopy). The ?-fiber texture component was transformed when grain oriented electrical steels was annealed primarily. However, the dominant texture along ?-fiber was developed differently in CGO and HGO, respectively. The {111}<110> texture was a dominant component in CGO, but {111}<112> component was dominant in HGO. The influence of the primary recrystallization texture on abnormal grain growth of Goss grains in grain oriented electrical steels was discussed based on the high-energy grain boundary theory.