钛丝与铸铁原位反应组织及性能的研究  

Microstructure and Properties of TiC/Fe Matrix Composite Synthesised by In-situ Reaction

作　　者：赵显鹏[1] 许云华[1] 

机构地区：[1]西安建筑科技大学材料科学与工程学院,陕西西安710055

出　　处：《铸造技术》2009年第6期745-747,共3页Foundry Technology

基　　金：国家十五科技攻关项目(项目编号:2005BA327C)

摘　　要：试验研究钛丝与铸铁原位反应制备复合材料。采用氩气保护、1138℃进行2h的等温处理并炉冷,对复合区进行显微组织观察、显微硬度测量、耐磨性能测试。结果表明,埋入铸铁内的钛丝反应生成了TiC增强相,复合区硬度较基体有了显著的提高;相对于铸铁标准试样,复合材料的耐磨性能有了明显的改善。Ti/Fe composites were put into the tube type resistance furnace with argon shield and heated at 1 138℃ for 2 h followed by furnace cooling. The microstructure of the Fe-TiC composite was studied by scanning electron microscopy （SEMi） and XRD, microhardness and wearresistancewere measured. The results indicate that Ti wires placed in iron matrix could react with C and formed TiC phase. The microhardness of the Fe-TiC composite is higher than the matrix. The wear-resistance of the Fe-TiC composite is better than the matrix.

关 键 词：原位反应 TiC/铸铁复合材料 显微组织 显微硬度 耐磨性 

分 类 号：TB331[一般工业技术—材料科学与工程]