Behavior of Stannum Segregation to Grain Boundaries in Hot Deformed Non-oriented Silicon Steel

Effects of stannum on texture of hot deformed non-oriented electrical steel strip were investigated by using EBSD analysis methods. The stannum segregated to grain boundary in hot deformed non-oriented silicon steel was observed experimentally with transmission electron microscope. The result showed that the texture evolution of hot band was different in different layer during hot deformed process. Stannum segregated to grain boundaries during hot-working process, which leads to decrease of {111} texture intensity and increase of {100} and {110} texture intensity. The magnetic properties of non-oriented silicon steel sheet can be improved obviously by adding trace stannum which segregated at the grain boundary in order to get favorable texture development. KEYWORD: Non-oriented silicon steel; Segregation; Grain boundary; Texture