摘要
基于Al-Ti-B4C体系,采用原位反应工艺-燃烧反应法制备了高体积分数（Al_3Ti＋B_4C）/Al复合材料,研究了燃烧环境对反应进程和致密化的影响。结果表明,850℃铝液的高速热源和控温介质作用,可使压块发生可控燃烧反应,在2 min内制备出致密度大于99%的（Al_3Ti＋B_4C）/Al复合材料;燃烧反应的可控性在于仅Al-Ti被引燃,B_4C未参与反应,使燃烧波加热速率较低,所以Al-Ti液相能有效填补压块内部的残余孔隙。
Based on A1-Ti-B4C system, （A13Ti＋B4C）/A1 composite with high volume fraction was fabricated by in-situreaction process-combustion reaction method. The effects of combustion environment on the reaction process anddensification process were studied. The results show that the the effect of heat source and the temperature control media of850 ℃ liquid aluminum contributes to the appearance of the controlled bum reaction of the compacts. （A13Ti＋BaC）/A1composite with density greater than 99% can be prepared in less than 2 min. The controllability of the combustion reaction liesin the ignition of only A1-Ti, while B4C does not participate in the reaction, which can lead to the combustion wave with alower heating rate, so that the A1-Ti liquid phase can effectively fill the residual porosity in compacts.
作者
刘梦璐
张振亚
陈刚
孟明艾
张再磊
袁方今
LIU Menglu, ZHANG Zhenya, CHEN Gang, MENG Ming＇ai, ZHANG Zailei, YUAN Fangjin(1. School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China; 2. Jiangsu Province Key Laboratory of High-end Structural Materials, Zhenjiang 212013, Chin)
出处
《热加工工艺》
CSCD
北大核心
2018年第4期129-133,共5页
Hot Working Technology
基金
江苏省自然基金(青年)项目(BK20140547)
国家自然科学基金资助项目(51174098)
江苏省科技支撑计划项目(BE2012135)
江苏省重点研发计划项目(BE2015148)
江苏高校优势学建设工程资助项目(2014)
江苏省重大科技成果转化项目(BA2014112、BA2015153)
关键词
燃烧反应
致密化
Al-Ti液相
复合材料
组织
combustion synthesis
densification
AI-Ti liquid phase
composite
microstructure
