Tissues and properties of the new type of white cast iron

The paper studied the tissues and properties of of SiCr white cast iron with different contents of silicon and chromium,which indicated that with the elevation of Si or Cr content,there was a gradual increase in the relative content of carbide in the SiCr white cast iron, microhardness and macrohardness of carbide and base-body.Carbide is made up of Fe₃C and Fe₇C₃.The abrasive wear value resisting impact of the low bainite tissues of SiCr white cast iron is better than that of other tissues.Cooling rate and quenching heating temperature have little influence on the abrasive wear value of this type of material.