关键词: 钢基复合材料, 粉末冶金锻造, 母合金, WC, 机械性能

Abstract: The specimens of WC/FY-1 steel matrix composites were prepared through sintering, forging and alloying processes in order to investigate the microstructures and the properties. The results show that the density, strength, hardness and wearability of the sinter-forged FY-1 steels increase greatly with the FY-1 master alloy powder addition, but the impact toughness decreases. The addition of FY-1 master alloy powder to the WC/FY-1 steel matrix composites can activate the sintering process by liquid sintering. On the other hand, the WC additive improves significantly wearability of the WC/FY-1 steel matrix composites, by which the wear-out of 15% WC/FY-1 steel matrix composite is just one filth of the W18CV4V alloy steel that is used widely to make guide rolls at present. The properties of the 15% WC/FY- 1 steel matrix composite can meet the requirement for material to make guide rollers for high-speed wire rolling mill. It is expected that the composites will be applies to roll making soon.