The impact test of room temperature to 100℃ of 2. 3% Si non-oriented silicon steel normalized at 900 ~ 950℃ were carried out

and the fracture morphologies were observed by Scanning Electron Microscopy (SEM). Effects of normalizing temperature on impact toughness of 2.3% Si non-oriented silicon steel are investigated. The results show that with increasing normalizing temperature

at room temperature the ductile fracture of test steel gradually changed into brittle fracture

the impact energy of steel decreases from 21.4 J to 12.2 J

at 100℃ the impact energy of test steel normalized at 900 ~ 950℃ is 28.4 ~ 33. 2 J with ductile fracture. The inclusions at impact fracture of normalized steel are main AIN.