Modification of High Carbon High Speed Steel
The microstructure and mechanical properties of high speed steel modified with different addition of ferrovanadium were investigated.The results revealed that the eutectic carbide networks are broken after modification,and the carbides are spheroidized and changed to rod-like or nodular,and distributed more uniformly after heat treatment.The impact toughness of high speed steel is obviously improved after modified by 1.0% vanadium.