Effect of Mn on <100> Texture Evolution in Fe-Si-Mn Alloys

Abstract

The texture can be evolved through the γ to α transformation by cooling in Fe-Si alloy systems. Oxygen in the annealing atmosphere hampers the evolution of the texture. The texture evolution is associated with the fact that the {100} faces are elastically compliant so that the texture can develop in a manner consistent with minimization of strain energy. By alloying Mn to Fe-Si alloys, the texture evolves in relatively high oxygen containing annealing atmosphere. The role of Mn in the texture evolution appears to be preventing formation of surface oxides, which modify the elastic modulus of metal surface, thereby suppress the development of the correct texture.