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为研究WC体积分数对WC_p/Fe复合材料组织、界面及压缩性能的影响,采用粉末烧结法制备了不同WC体积分数的WC_p/Fe复合材料。结果表明:在不同WC体积分数的WC_p/Fe复合材料中,WC颗粒发生了不同程度的溶解,其与基体间均呈冶金结合。随着WC体积分数的增加,WC_p/Fe复合材料的界面等效宽度呈现递减趋势,当WC体积分数为50%时,界面等效宽度最小,为39.8μm;复合材料的压缩强度呈先增大后减小趋势,当WC体积分数达到45%时,压缩强度达到最大值;复合材料的断裂方式由准解理断裂逐渐转向纯解理断裂,当WC体积分数达到50%时,WC_p/Fe复合材料的断裂方式为纯解理断裂。
In order to study the effect of WC volume fraction on the microstructure, interface and compressive properties of WC_p / Fe composites, WC_p / Fe composites with different WC contents were prepared by powder sintering. The results show that the WC particles dissolve to some extent in the WC_p / Fe composites with different WC volume fraction, and metallurgical bonding between the WC particles and the matrix. With the increase of volume fraction of WC, the equivalent width of WC_p / Fe composites showed a decreasing trend. When the volume fraction of WC was 50%, the equivalent width of interface was the smallest, which was 39.8μm. The compressive strength of composites increased first The compressive strength reaches the maximum when the volume fraction of WC reaches 45%. The fracture mode of composites turns from quasi-cleavage fracture to pure cleavage fracture. When WC volume fraction reaches 50%, the WC_p / Fe composite The fracture mode of material is pure cleavage fracture.