EFFECT OF SILICON CONTENT ON SECONDARY RECRYSTALLIZATION IN GRAIN-ORIENTED ELECTRICAL STEEL PRODUCED BY SINGLE-STAGE COLD-ROLLING PROCESS

A study was made on the effect of the silicon content on secondary recrystallization in grain-oriented electrical steel produced by the single-stage cold rolling process where both MnS and AlN are utilized as inhibitors. The following conclusions were derived from the study: (1) The onset and progress of secondary recrystallization are retarted when the silicon content is increased from 3.0 to 3.3 mass%. No secondary recrystallization occurs when the silicon content is increased further to 3.7 mass%. (2) This secondary recrystallization behavior may be ascribed to the decrease in the {110} density of primary-recrystallized texture, the increase in the mean diameter of primary-recrystallized grains, and the decrease in the inhibiting effect with the increase in the silicon content.