钒丝与铸铁原位合成V8C7的研究
Research on V8C7 Synthesized by In-situ Reaction Between Cast Iron and V Wires
叶芳霞1, 赵显鹏2, 许云华1, 牛立斌1
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作者单位：1. 西安建筑科技大学 机电工程学院, 陕西 西安 710055; 2. 南京钢铁股份有限公司中厚板卷厂, 江苏 南京 210035
中文关键字：原位合成； 显微组织； 显微硬度； 耐磨性
英文关键字：in-situ synthesis; microstructure; microhardness; wear -resistance
中文摘要：以钒丝和铸铁为原料，采用铸造和热处理工艺相结合的方法，使钒丝与铸铁中的碳原子反应，原位合成了V8C7颗粒增强铁基复合材料。对复合区进行显微组织观察及分析、显微硬度测量、耐磨性能测试。结果表明，生成的V8C7颗粒均匀分布于铁基体中，且生成物与基体有很好的冶金结合。复合区的最高硬度达3022 HV0.05，平均硬度是基体的10～15 倍。复合材料的耐磨性相对于铸铁标准试样提高了2.89倍。
英文摘要：V8C7 particles reinforced iron matrix composite was produced by in-situ synthesized process through casting plus heat treatment employing vanadium wires and grey cast iron. The microstructure, microhardness and wear resistance of compound region were observed and measured. The results show that, V8C7 particulates distribute uniformly in iron matrix, there is good metallurgy-bond between the particles and matrix, the highest microhardness of compound region is 3022 HV0.05, and the average microhardness is 10～15 times as high as iron matrix. The wear resistance of the composite is 2.89 times higher than the cast iron standard sample.