摘要
研究了原位合成TiC颗粒增强HT2 0 0基铸铁复合材料的工艺、组织和性能 ,结果表明 ,在空气中以SHS方法于熔体中合成TiC的制备工艺方法可行性不高 ,而以Ti Fe合金形式在熔体中原位合成法可行。原位合成的TiC颗粒细化了材料的组织 ,减小了珠光体片层间距和石墨长度 ,改变了石墨形态 ,从而使材料的强度和硬度大幅提高。磨损试验结果亦显示 。
Microstructure and mechanical properties of TiCp reinforced HT200 cast iron matrix composite have been investigated. The results show that in situ reaction to produce TiC particulates in cast iron matrix by adding Ti Fe alloy into the melt is superior to the combustion synthesis(SHS)in air. The existence of TiC particles refines the microstructure of HT200 matrix, decreases the lamination spaces of pearliest and the graphite length, and changes the graphite morphology. The ultimate strength and wear resistance have also been increased markedly by adding TiC.
出处
《铸造》
CAS
CSCD
北大核心
2001年第3期149-151,共3页
Foundry
