Influence of tin, range from 0 - 0.31wt%, on the recrystallization behavior and texture of grain oriented electrical has been investigated. Tin is susceptible to segregation at grain boundary and on surface that pinning down the grain boundary mobility. Annealed hot bands in 2.5mm are cold rolled to 0.35 mm in one-stage cold rolling. Cold-rolled sheets are decarburization annealing at 800°C for 5 minutes in wet H_2-N_2 atmosphere. During secondary recrystallization specimens are heated to 900 ~1200 °C and soaked 12 hours with a heating rate 12 °C per hour after 700 °C. Both X-ray and EBSD are conducted to examine the grain orientation.It is found that pinning effect of tin is very strong for secondary recrystallization. The specimens containing less than 0.05wt% tin finish secondary recrystallization after SRT at 1000 °C. The secondary recrystallization grain growth became difficult as the tin content above 0.10wt%. According to EBSD results, after primary recrystallization, the intensity of (011)<001> texture in the specimens with nitriding 30 seconds slightly increases with increasing tin content and reaches a maximum value at 0.05wt% tin. Then, it rapidly decreases with increasing tin and reaches a minimum at 0,21wt% tin. Finally, it increases with increasing tin again. However, the intensity of (011)<001> texture in the specimens without nitriding decreases with increasing tin content and reaches a minimum value at 0.21 wt% tin. Then, it increases with increasing tin. Both EBSD and XRD results show that the intensities of (111) textures in the specimens both with and without nitriding decreases with increasing tin content and reaches a value at 0.05 wt% tin. Then, it increases with increasing tin and reaches a peak at 0.1 wt% tin. Finally, it decreases with increasing tin again. For the specimens without nitriding treatment, while the SRT is higher than 1100 °C, best magnetic properties was occurred in the steel containing 0.05 wt% tin. However, the flux density increases and core loss decreases with increasing the tin content after nitriding and secondary annealing at 1000 °C. Nitriding can improve the magnetic properties of grain oriented electrical steels.
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