Subsequently by quenching and low-tempering heat treatment the martensite matrix with uniform,compact and dispersed carbide structure distribution was formed without eutectic ledeburite at the surface alloying layer.

• 随后进行淬火+低温回火热处理,使表面合金层获得马氏体基体上均匀分布的细小弥散碳化物组织,没有共晶莱氏体。