The Effect of Cold Rolling Process on the Microstructure and Texture Evolution in a ۱ wt. % Si Non-oriented Electrical Steel

In this study, the effect of cold rolling process on the microstructure and texture evolution in ۱wt. % Si non-oriented electrical steel was investigated. For this purpose, all samples were processed through single-stage hot rolling at ۱۱۰۰ ° C and two-stage cold rolling (cross rolling and unidirectional rolling) with intermediate annealing at ۶۵۰ °C for ۳۵ seconds. Finally, all of them were fully annealed for ۳ min at ۹۰۰ ° C. The results showed that cold rolling process could affect shear band formation, deformation texture and annealing texture. Shear band and {۳۲۲} grains were decreased and {۱۰۰} grains were increased by the cross rolling method. These observations showed the weakening of the {۱۱۰} and {۱۱۱} components and the strengthening of the {۰۰۱} component after final annealing for the cross rolled sample. On the other hand, shear band formation in the unidirectional rolling sample caused the development of annealing Goss texture component ({۱۱۰} ).

کلیدواژه ها:

Non-oriented electrical steel ، Microstructure ، Texture ، Shear band