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Hot-Rolled Texture of FCC and BCC Metals

Orientation microscopy, based on electron backscattered diffraction (EBSD) has been used to study the regularities of formation of the crystallographic texture in materials with BCC and FCC lattices in the hot rolling process throughout the whole thickness of the strips. It has been established that the texture of the central layers of all samples consisted of the discrete sets of stable orientations corresponding to the cold rolling texture. In the surface layers of the samples Fe-3%Si and Al, the texture consisted of sets of discrete orientations corresponding to the shear structure. In the samples of Mo and austenitic steel, the set of discrete orientations of the surface layers matched the texture of the central layers. The difference in textures of the central and surface layers was the result of a certain stress state. The amount of friction has notably influenced the texture of the surface layer. In "hard" materials (Mo, γ-Fe), the friction was minimal, i.e. the difference in stress states of the surface and central layers was insignificant.