原位合成V8C7颗粒增强铁基复合材料组织与磨粒磨损性能研究
Study on Microstructure and Abrasive Wear Properties of V8C7 Particles Reinforced Iron Matrix Composite Prepared by In-situ Technology
胡珊珊, 许云华, 钟黎声, 叶芳霞
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作者单位：(西安建筑科技大学 机电工程学院 耐磨材料研究所, 陕西 西安 710055)
中文关键字： 原位反应； 磨粒磨损； 复合材料
英文关键字：in-situ reaction; abrasive wear; composite
中文摘要：利用铸造复合热处理工艺制备V8C7颗粒增强铁基复合材料的磨损试样，用SEM、XRD观察了材料的组织形貌。在室温条件下，选用ML-100磨料磨损试验机，采用三氧化二铝磨料，研究了不同体积分数V8C7颗粒对V8C7增强铁基复合材料磨损性能的影响。结果表明，采用此工艺制备的V8C7增强铁基复合材料的耐磨性是灰铸铁的11.7倍；当V8C7颗粒体积分数逐渐增大时，V8C7颗粒增强铁基复合材料的相对耐磨性先增大后减小。
英文摘要：Iron based composite, reinforced with V8C7, was produced by in-situ process of casting and heat treatment. The microstructure and morphology of the composite was studied by SEM and XRD. The effect of V8C7 particle volume fraction on the wear property of the composite was studied by ML-100 abrasive wear testing machine at room temperature. The results show that the wear resistance of V8C7/Fe composite is 11.7 times higher than gray cast iron under this process, and when the volume fraction of V8C7 particles gradually increases, the relative wear resistance of the composite increases first and then decreases.