摘要
利用光镜和扫描电镜观察了形变Cu 3Ag 10Cr原位复合材料 (η =3 95 )退火时Cr纤维形态的变化 .研究发现 ,Cr纤维不稳定性表现为四个阶段 :纵向分裂、圆柱状化、断开、球化和粗化。分析了其机理并测定了断开动力学曲线。
In this paper the shape changes of Cr filaments in Cu\|Ag\|Cr in situ composite during annealing were observed by optical microscopy and scanning electron microscopy. The results found that the instability of Cr plates has four stages: longitudinal splitting, cylinderization, breakup, spheroidization and roughing. The mechanisms of instability of Cr plates was analysed and provided. The breakup kinetics of Cr filaments was monitored by quantitative methallography.
关键词
原位复合材料
热稳定性
铬纤维
铜基
deformation\|process in situ composite, Cr filament, thermal stability
