铸铁与铌丝原位生成NbCP /Fe复合材料
NbCP/Fe Composites In-situ Synthesized by Reaction Between Cast Iron and Nb Wires
刘晓洁1, 许云华1, 赵显鹏2, 牛立斌1
点击：3407次 下载：0次
作者单位：1. 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; 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：原位生成； NbC； 颗粒增强； 复合材料
英文关键字：in-situ synthesis; NbC; particulates reinforcement ; composites
中文摘要：利用铸铁浇注将Nb丝均匀复合固定于铁基体内，然后在1165 ℃保温2 h，让提前置于铸铁中的铌丝与周围碳原子原位反应生成NbC颗粒增强铸铁复合材料， 对复合区进行显微组织观察分析、显微硬度测量。 结果表明，复合区域显微硬度最高值达到1930 HV0.05，复合区域的平均显微硬度为1827 HV0.05，是基材的8～9倍。复合试样的室温两体磨料相对耐磨性是铸铁的2.71倍，耐磨性能良好。
英文摘要：The NbCP reinforced cast iron composite was prepared using in-situ reaction between cast iron and Nb wires at 1164 ℃ for 1 h. The Nb wires were uniformly fixed in the iron matrix through pouring molten iron. The microstructure and microhardness in the compound region were observed and measured, respectively. The results show that, the maximal microhardness in the compound region is 1930 HV0.05, and the average microhardness is 8～9 times as high as iron matrix. The wear-resistance of the composite is 2.71 times higher than the cast iron standard sample.