Effect of Inter-Pass Aging on Recrystallization Texture in 3% Si Grain-Oriented Electrical Steels

Aging treatment during cold rolling passes is effective in improving magnetic properties of 3% Si grain oriented electrical steels. The effects of inter pass aging treatment during cold rolling on the recrystallization texture is associated with the interaction between deformation of cold rolling and interstitial elements like carbon and nitrogen. Aging treatment during interpasses of cold rolling stage increases the dislocation density and makes the tangled dislocation structure. The present work aims at investigating the texture change by aging treatment in primary and secondary recrystallization. The main primary texture changes are the slight increase of {110} < 001 > and decrease of {111} < 112 > and {210} < 001 > with the increase of aging temperature. This results in the decrease of final grain size of secondary recrystallization. Pass aging at 150-250 deg C for 10 minutes improves also significantly the magnetic flux density in the low carbon grain oriented electrical steels.