Textured 6.5% Silicon-Iron Alloy

Abstract

Sheet of an iron base alloy containing 6.5% silicon and second phase inclusions was prepared by hot rolling and pack rolling. Two structures were obtained by varying the rate of heating to the final annealing temperature. A slow rate of heating yielded {110} grains in a secondary recrystallization structure, and a fast rate, the primary recrystallization and normal grain growth structure. Only during the slow rate of heating were inclusions effective in suppressing normal grain growth and in promoting growth of {110} secondaries. The secondary recrystallization texture was of the {110} 〈001〉 type. The normal grain growth texture had a similar degree of alignment of 〈100〉 directions with the rolling direction and a nearly random distribution of planes of the 〈100〉 zones parallel to the rolling plane. Similar dc and ac magnetic characteristics were observed for these two structures since they had the same degree of alignment of 〈100〉 directions (easy directions of magnetization) with the rolling direction.