MnFe加入对SHS负压铸造钢基表面复合材料的影响  

Influence of MnFe on Microstructure and Hardness of TiC/Fe Composite Fabricated by SHS

作　　者：许国红[1] 卢德宏[1] 张伟 蒋业华[1] 周荣[1] 

机构地区：[1]昆明理工大学机电工程学院,云南昆明650093 [2]易门致远机电工贸公司,云南易门651101

出　　处：《铸造技术》2007年第1期43-46,共4页Foundry Technology

摘　　要：研究了加入不同含量MnFe粉对负压自蔓延高温合成(SHS)技术制备的表面复合材料组织和性能的影响。结果表明:MnFe粉在SHS中细化了TiC颗粒,降低了TiC/Fe复合材料的硬度,提高了基底的硬度,改善了复合材料和基底的硬度梯度。MnFe alloy powder was added into compacted TiC particle block for producing in-situ TiC reinforced steel matrix composites on a steel substrate using self-propagation high temperature synthesis （SHS） technology; and the effect of the powder on the microstructure and hardness of the composites was investigated. The results showed that addition of MnFe can significantly refine the TiC particles, slightly reduce the hardness of the composites, increase the hardness of the substrate near to the composite, and therefore improve the hardness gradient between the composite and the substrate. The SHS mechanism of TiC with addition of MnFe was discussed.

关 键 词：自蔓延高温合成 TIC 金属基复合材料 MnFe合金 

分 类 号：TB331[一般工业技术—材料科学与工程]