Influence of Rolling Reduction on Secondary Recrystallization and Magnetic Properties in Strip-Cast Grain-Oriented 4.5%Si Steel

Grain-oriented 4.5%Si steel is processed by strip casting and two-stage rolling with second rolling reduction varied from 53.3 to 82.7%. The microstructure and texture evolution are studied with emphasis on the effect of second rolling reduction on secondary recrystallization. After secondary annealing, significant abnormal grain growth occurs for all reductions in the range of 53.3–82.7%. The underlying reason is the strong inhibiting force...