压铸态SiCw/Al复合材料中的热残余应力  

THERMAL RESIDUAL STRESS IN AS SQUEEZE CAST SiCw/Al COMPOSITE

作　　者：姜传海[1] 吴建生[1] 张榴凤[1] 王德尊[2] 

机构地区：[1]上海交通大学教育部高温材料及高温测试重点实验室,上海200030 [2]哈尔滨工业大学材料科学与工程学院,哈尔滨150001

出　　处：《理化检验（物理分册）》2001年第12期507-509,共3页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：利用X射线衍射方法 ,研究了压铸态SiCw/ 60 61Al复合材料中热残余应力。结果表明 ,压铸态复合材料基体中存在三向不等的热残余拉应力 ,各向应力分量差异主要与晶须的择尤取向有关。晶须体积分数越高 ,则晶须的择尤取向程度越明显 。By using the X ray diffraction method, the thermal residual stresses in as squeeze cast SiCw/6061Al composites were investigated. The results showed that there were unequal triaxial tensile thermal residual stresses in matrix of the composites. The difference among stress tensors was mainly related to the preferred orientation of whiskers. The higher volume fraction of whiskers, the more obvious preferred orientation of whiskers, and the larger difference existed among tensors of residual stress in the composites accordingly.

关 键 词：碳化硅晶须 铝复合材料 热残余应力 X射线衍射 压铸态 SICW 

分 类 号：TB331[一般工业技术—材料科学与工程]