On the Effect of Texture in Experimental Grades of High-Silicon Electrical Steel
Crystallographic texture has an important effect on the magnetic quality of electrical steel: a specific texture parameter A is defined and used to estimate the magnetic quality of texture components. It is shown that obtaining the best possible texture in non oriented electrical steel can reduce the losses with 1,5 W/kg. Two production schemes for high silicon electrical steel are described: a conventional processing through hot and cold rolling with adequate temperatures and cooling rates and an immersion-diffusion process by hot dipping in a Si- and Al-rich bath followed by diffusion annealing. The texture evolution in these experimental materials is under study and first results are reported for conventional alloys (rolling procedure) and for immersion-diffusion alloys, which are annealed after dipping in order to obtain a controlled concentration gradient with high Si and/or Al at the surface or a homogeneous Si and/or Al-content over the thickness.
T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran
Y. Houbaert et al., "On the Effect of Texture in Experimental Grades of High-Silicon Electrical Steel", Materials Science Forum, Vols. 539-543, pp. 3341-3346, 2007