Elimination of Band Structure in EA4T Axle Steel by Current Impulse Treatment

In order to eliminate the band structure in EA4T axle steel,the current impulse heat treatment of EA4T axle steel was studied.Specimens were cooled down according to the thermal simulatied central curve of the entire axle.The results show that the band structure is eliminated by current impulse treatment,and the amount of proeutected ferrite reduces and the block size is refined.Meanwhile,the homogeneity of microstructure increases.