【作者】 彭晓峰； 张玉峰； 黄校先； 宋历昕； 胡行方；

【Author】 Peng Sianfeng;Zhang Yufeng;Huang Xianxian;Song Lixin;Hu Xingfang;Shanghai Institute of Ceramics,Chinese Academy of Sciences;

【机构】 高性能陶瓷材料和超微结构国家重点实验室中国科学院上海硅酸盐研究所；

【摘要】 利用Eshelby模型计算了碳化硅晶须补强氧化铝复合材料中的晶须含量对残余应力的影响,与X-ray衍射测量的数据进行比较,两者结果非常接近。随着晶须含量的增加,基体Al₂O₃中残余张应力增加,而碳化硅晶须中的残余压应力降低。更多还原

【Abstract】 The dependence of the residual stresses of silicon carbide whisker-reinforced alumina composites on whiskers concertration was studied by X-ray diffraction.The measured values of the residual stresses were compared with the calculated ones using the scheme of the elastic ellipsoidal inclusion of Eshelby model and regarding the whiskers as prolate ellipsoids.The results revealed:both values are almost identical,the residual stress in matrix A1₂O₃ increases but that in SiC whiskers reduces with an increase in whiskers’ concentration.更多还原