SiC/Al复合材料断裂机制的声发射研究  

ACOUSTIC EMISSION STUDY ON FRACTURE MECHANISM OF SiC/Al COMPOSITE

作　　者：朱祖铭[1] 石南林[1] 郭延风[1] 

机构地区：[1]中国科学院金属研究所材料疲劳与断裂国家重点实验室,沈阳市110015

出　　处：《材料研究学报》1997年第1期15-20,共6页Chinese Journal of Materials Research

基　　金：国家自然科学基金!5981003

摘　　要：用SiC单纤维Al基模型复合材料使断裂源单一化，测定这些断裂源的声发射特征，成功地用声发射特征区分和识别复合材料中的纤维断裂、纤维—Al基体间的界面断裂、基体断裂，结合金相观察，分析了这些断裂源产生不同声发射特征的原因．Acoustic emission (AE) study on SiC/Al model composite which made the fracture sources simple has been carried out. AE characteristics from fracture sources have been measured. Three kinds of fracture in SiC/Al, fiber fracture, fracture of interface between fiber and matrix and matrix fracture have been recognized and distinguished by AE characteristics. A model proposed based on AE data and metallurgical examination explains the reason of why fracture sources have different AE behaviours.

关 键 词：复合材料 声发射 断裂机制 金属基 

分 类 号：TB331.03[一般工业技术—材料科学与工程]