Evolution of texture in high permeability grain oriented silicon steel produced by casting thin slab and rolling process

Abstract

The texture of high permeability grain-oriented silicon steel produced by Thin Slab Casting and Rolling process through adopting low slab reheat temperature and AlN as the main inhibitor has was studied. The results show that the microstructure of the hot rolled strip is nonuniform through the thickness, and the Goss texture with a maximum intensity mainly concentrated on the surface. The microstructure of the normalized strip is fully recrystallized, and the Goss texture is in both the surface and the subsurface layer, with a maximum intensity in subsurface layer. The microstructure of the cold rolled strip is fibrous tissues, the γ-fibre texture is the main texture in the surface, and the (223)(110) is the dominant texture in both the subsurface layer and center layer. The microstructure of the decarburization annealed sheet is fully primarily recrystallized, and the γ-fibre texture is the main texture. The Goss grains abnormally grow after high temperature annealing, it is the single Goss texture. © 2013 The Japan Institute of Metals and Materials.