摘要
研究了淬火处理对原位TiCp/Fe复合材料组织和耐磨性的影响.结果表明,复合材料经淬火处理后,其基体组织转变为马氏体,且进一步析出了一定量的细小TiC颗粒.这种组织变化使复合材料的冲击韧性略有下降,但其硬度和耐磨性均显著提高,且其耐磨性是高铬白口铸铁的1.3倍.用扫描电镜和能谱观察分析发现,在淬火复合材料的磨损表面上,TiC颗粒未剥落。
The effect of quenching treatment on the microstructure and abrasive wear resistance of in situ TiC p/Fe composites has been investigated. The results show that, after quenching, not only is the matrix structure transformed from flake shaped pearlite to needle shaped martensite, but also some fine TiC particles are formed in the structure. As a result, although the impact toughness of the quenched composite decreases a little, its hardness and wear resistance increase significantly, and the wear resistance is 1.3 times of that of one of the traditional abrasion resisting materials——high Cr white cast iron. It has been found that, by using scanning electron microscope (SEM) and energy dispersion spectroscope(EDS), TiC particles retained on the worn surface of the quenched composite continuously resist the wear action of abrasive grits.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2000年第1期6-9,共4页
Tribology
基金
武汉工业大学材料复合新技术国家重点实验室开放基金!资助项目(97002)
华中理工大学科技基金!资助项目(96006)
关键词
淬火处理
铁基
复合材料
组织
磨料磨损
quenching treatment
ferrous matrix composite
microstructure
abrasive wear
