In order to further explore the effect of pulsed magnetic field annealing process on the microstructure and texture of oriented silicon steel,using a common grain oriented silicon steel containing 3.1 wt.％Si which after the first cold rolling,and a pulsed magnetic field experimental tube annealing furnace independently developed by the laboratory was applied for decarburizing annealing at 850 ℃ with a magnetic field intensity of 12mT,followed by a secondary cold rolling with a reduction rate of 57％.Microstructure and texture of decarburizing annealing and the secondary cold rolling were observed and analyzed by metallographic microscope and XRD.The results show that the decarburization efficiency of CGO steel when pulsed magnetic field is applied is much faster than that when no magnetic field is applied.After double cold rolling,the number of shear bands in the samples of CGO steel with pulsed magnetic field applied in the process of decarburizing annealing is significantly higher than that without magnetic field applied.The texture intensity of {111}<112>increases,the texture intensity of {111}<110>is dramatically weakened.This will facilitate the secondary recrystallization of the GOSS texture of the subsequent cold-rolled silicon steel during high temperature annealing,and improve the final magnetic properties.At the same time,the experimental basis for promoting the industrial application of pulsed magnetic field annealing process for oriented silicon steel is provided.
oriented silicon steelpulsed magnet fieldheat treatmentcold rolled textureshear band
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