摘要
本文通过对热压合成制备的SiC +MoSi2 复合材料显微组织及其断口形貌分析 ,结合硬度、抗弯强度、断裂韧度等力学性能和孔隙率、晶粒度的测试 ,初步探讨了SiC颗粒强韧化MoSi2 复合材料的效果和机制。
SiC particles reinforced MoSi 2 matrix composites which was synthexized by hot pressing are studied.Through observation on the microstructure of MoSi 2 and its composites accompanied with the measurement of bending strength,microhardness and fracture toughness,the strengthening toughening mechanism of the materials is revealed.It is shown that the strengthening mechanism of the composites are secondly phase strengthening and grain refining,and the toughening mechanism is a synthetic effect in terms of grain refining,crack deflection and crack branching.
出处
《南昌航空工业学院学报》
CAS
2000年第3期16-18,25,共4页
Journal of Nanchang Institute of Aeronautical Technology（Natural Science Edition）
关键词
高温结构材料
SIC颗粒
MOSI2
强韧化
复合
SiC particle
MoSi 2 composite
Strengthening toughening
Microstructure and Property.
