SiC纤维增强的钛合金基复合材料的显微结构  

MICROSTRUCTURE OF Ti ALLOY BASED COMPOSITE REINFORCED BY SiC FIBERS

作　　者：于立国[1] 吕毓雄[1] 李斗星[1] 叶恒强[1] 

机构地区：[1]中国科学院金属研究所固体原子像开放研究实验室

出　　处：《金属学报》1996年第3期318-322,共5页Acta Metallurgica Sinica

摘　　要：利用电子显微镜研究了ＳｉＣ纤维增强的钛合金基复合材料的显微结构，结果表明，复合材料的增强相为直径１２０μｍ左右并含有１５μｍ钨芯的柱状纤维，β－ＳｉＣ针状枝晶沿径向生长，其（１１１）面垂直于枝晶生长方向并含有大量的层错和微孪晶。纤维与基体结合得很理想，界面非晶保护层在材料复合过程中未受损失。在材料复合过程中。The study of Ti alloy based composite reinforced by SiC fibers showed that SiC dendrites grew along the radial directions peprendicular to the tungsten core; many stacking faults and microtwins were formed within the dendrites; SiC fibers bond well to the matrix, and the amorphous interfacial layers between them have not been damaged during composition. In the course of composition SiC dendrites near the interfacial region dissolved and diffused into the amorphous layer and reacted with the Ti alloy matrix at high temperature, producing TiC and Ti5Si3 .

关 键 词：碳化硅纤维 钛合金 金属基 复合材料 显微结构 

分 类 号：TB333[一般工业技术—材料科学与工程]