Effect of Aging Rolling Temperature on the Microstructure， Texture and Magnetic Properties of Low-temperature Grain-oriented Silicon Steel

Abstract

The effects of aging rolling temperature （150，200，250，300 ℃） on microstructure ， texture and magnetic properties of low-temperature grain-oriented silicon steel were studied by aging rolling experiment at different temperatures for 5 min. The results show that the aging rolling temperatures has no obvious effect on the microstructure morphology of cold rolling and primary recrystallization of low-temperature grain-oriented silicon steel. However， the contents of ｛111｝ <112> and Goss in the primary recrystallization microstructure increased and then decreased with the increase of aging roll⁃ ing temperature， and with the highest contents at 200 ℃ for ｛111｝<112> texture， while at 250 ℃ for Goss texture. And the proportion of primary recrystallization texture of ｛411｝<148> and ｛100｝<012> is relatively low. The increase of Goss and ｛111｝<112> texture and the decrease of ｛100｝<012> texture in the primary recrystallization microstructure resulted in perfect secondary recrystallization of the sample during high temperature annealing. After high temperature annealing， there were fewer fine grains and island grains， and the final sheets had excellent magnetic properties.

Keywords

• aging rolling； grain-oriented silicon steel； microstructure； texture； magnetic properties