Structures and properties of modified M2 cast high speed steel

M2 high speed steel was modified by YKNa, the effects of complex modification on the structures and properties of M2 cast high speed steel has been studied The results show that the structures of M2 cast high speed steel modified by YKNa were obviously refined and the eutectic carbide networks were changed into spherical After modification, the impact toughness was increased by 707%, wear resistance was also increased, all mechanical properties of inoculation M2 high speed steel were close to that of forging M2 high speed steel and the modified mechanism was also analyzed