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用SEM/EDX研究了WC颗粒在用喷射成形工艺制备WC颗粒增强高速钢复合材料中的成分变化，重点分析WC颗粒与高温液态高速钢接触时发生的溶解—析出现象．并针对WC颗粒的成分变化，对比研究了传统硬质合金和钢结硬质合金中WC晶粒的成分变化，提出了WC颗粒在喷射成形高速钢复合材料中的溶解—析出机理．结果表明，WC颗粒增强高速钢复合材料中WC颗粒含有较多的合金元素，特别是Fe，这是由复式碳化物的析出特性所造成的．
The composition of WC particles in WC particles reinforced high speed steel composites prepared by injection molding was studied by SEM / EDX. The dissolution and precipitation phenomena of WC particles in contact with high temperature liquid HSS were analyzed emphatically. In the light of the change of composition of WC particles, the composition changes of WC grains in conventional cemented carbide and steel-bonded cemented carbide were comparatively studied. The dissolution-precipitation mechanism of WC particles in the spray-formed HSS composite was proposed. The results show that the WC particles in the WC particle reinforced high speed steel composites contain more alloying elements, especially Fe, which is caused by the precipitation characteristics of the double carbides.