Annealing effect on grain texture of cold-rolled 4.5% Si-Fe ribbons prepared by a rapid quenching method

Abstract

4.5% Si-Fe ribbons with 280-μm thickness were cold rolled to 60-μm thickness with high thickness reduction rate about 30% per pass. In the ribbon the secondary recrystallization of (110)[001] orientation was sufficiently promoted and covered the whole ribbon surface after annealing at 1150 °C. In addition, misorientation angles of all grains were under 5° and the average grain misorientation from (110)[001] was 1.5°. The magnetic properties in the grain-oriented 4.5% Si-Fe ribbon were excellent: the maximum B8 was 1.86 T, and the minimum Hc was 2.2 A/m.