Effect of a second phase on the primary and secondary recrystallization texture of grain oriented Si-Fe sheets

The magnetic properties of grain oriented Si-Fe sheet with Goss texture depend on the texture perfection. The texture produced by primary recrystallization is one of the parameters which controls the perfection of the secondary texture. It is here shown that a martensitic phase dispersed in the matrix, obtained by quenching the hot rolled band from high temperature, can affect the primary recrystallization texture. By a particular X ray diffraction method the central part of the {110} pole figure of the primarily recrystallized sample is described. It is clearly shown that if a low temperature transformation phase is present in the microstructure before cold rolling, the divergence of orientation of the individual grains from the ideal one in the final sheet is lower and the 10 Oe permeability is higher.