Recrystallization behavior of warm rolled Fe-6.5%Si alloy sheet

Microstructure and texture evolution in warm rolled Fe-6.5% Si alloy sheet were observed in the process of annealing treatment by means of electron backscatter diffraction,and the recrystallization behavior was discussed. The results show that the texture of the warm rolled and annealed sheet is composed of strong(111) 〈112〉,weak 〈110〉//RD and Goss. 〈110〉//RD and(111) 〈112〉recrystallized grains prior nucleate at the vicinity of grain boundaries of deformed grains possessing analogous orientation,thus low angle grain boundaries appear between recrystallized and deformed grains. New grains with statistic orientation and nucleated at sharp corners and places characterized by inhomogeneous microstructure form high angle grain boundaries with the surrounding matrix. Finally,(111) 〈112〉grains accumulated in the deformed matrix develop into(111) 〈112〉new grains,and the recrystallized(111) 〈112〉texture is strengthened. It is concluded that the annealing of the warm rolled sheet is characterized by low storage energy drive and inhomogeneous microstructure.(111) 〈112〉and(112) 〈110〉 deformed grains develop into new grains by continuous recrystallization. New grains formed in sharp corners are gained by discontinuous recrystallization,and their statistic orientation and high migration rate of high angle grain boundaries lead to a weakened texture level of recrystallization microstructure. In addition,Goss grains major nucleate in(111) 〈112〉deformed grains.