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2h,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1930HV0.05,复合区域的平均显微硬度为1827HV0.05,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。
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.
出处
《热加工工艺》
CSCD
北大核心
2010年第6期65-67,70,共4页
Hot Working Technology
基金
陕西省2007年"13115"科技创新工程工程技术中心资助项目(2007DGC-17)
关键词
原位生成
NBC
颗粒增强
复合材料
in-situ synthesis
NbC
particulates reinforcement
composites
