摘要
采用中频感应电炉熔炼Fe-W,Fe-Ti和Fe-C合金,通过控制熔炼温度、熔炼时间获得了(Ti,W)C/Fe复合材料,采用扫描电镜分析了复合材料的微观结构,利用X射线分析了相组成.结果表明,提高熔炼温度或延长熔炼时间可保证熔体中(Ti,W)C的充分形成,同时通过适当提高冷却速率可获得(Ti,W)C作为惟一增强相的Fe基复合材料.(Ti,W)C比较均匀地分布在熔体中,减小与熔体间的密度差,因此可获得比较均匀的凝固组织.
The in-situ synthesis of 10 vol% （TiW）C-Fe composite was investigated by melting the Fe-W, Fe-Ti and Fe-C alloys with melting temperature and time controlled. The microstructure and phase composition were checked by employing SEM and XRD with Cu Kα radiation. The results showed that （Ti,W）C particles, as the only ones, can form reinforcement when the alloy is melted at higher temperature and/or longer time by properly controlling solidification rate. （Ti, W）C particles are evenly distributed in the matrix due to the lower mismatched densities between （Ti,W）C particles and liquid metal.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第11期1074-1077,共4页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(50071036)
辽宁省教育厅资助项目
关键词
FE基复合材料
组织结构
碳化物
强化
原位生长
iron-based composite
microstructure
carbide
reinforcement
in-situ synthesis
