铸铁与铬丝原位反应的研究  

Research on In-situ Reaction of Cast Iron and Cr Wires

作　　者：张夏妮[1] 许云华[1] 牛立斌[1] 焦有生[1] 

机构地区：[1]西安建筑科技大学机电学院,陕西西安710055

出　　处：《热加工工艺》2009年第12期76-78,共3页Hot Working Technology

基　　金：陕西省2007年"13115"科技创新工程工程技术研究中心项目(2007ZDGC-17)

摘　　要：采用1135℃×20min的工艺,让提前置于铸铁中的铬丝与周围碳原子原位反应生成M7C3[(Fe,Cr)7C3]型铸铁复合材料,对复合区进行显微组织观察分析、显微硬度测量、耐磨性能测试。结果表明,复合区硬度最高达到1750HV0.05,平均硬度是基体的9～11倍。复合材料的耐磨性相对于铸铁标准试样提高了2.89倍。The Cr/Fe composite was prepared using cast iron and Cr wires in-situ reacted at 1135 ℃ for 20 min. The microstructure, microhardness and wear-resistance of compound region were observed and measured. The results show that the maximal microhardness is 1750 HV0.05, and the average microhardness is 9-11 times higher than that of substrate. The wear-resistance of the composite is 2.89 times higher than that of the cast iron standard sample.

关 键 词：铸铁 M7C3 显微硬度 耐磨性 

分 类 号：TG111.1[金属学及工艺—物理冶金]