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研究了晶须呈不同排列方式的SiCw/6061Al复合材料不同温度下的压缩行为.通过SEM、TEM观察了压缩前后复合材料的组织形貌,用热模拟试验机和图象分析仪对压缩过程中应力-应变曲线和压缩前后复合材料的取向进行了测定.结果表明,晶须取向和变形温度对复合材料的压缩行为有重要影响,塑性变形仅是晶须转动的必要条件,晶须取向和变形温度决定复合材料变形的均匀性.
The compressive behavior of SiCw / 6061Al composites with different orientations of whiskers at different temperatures was investigated. The morphologies of the composites before and after compression were observed by SEM and TEM. The stress-strain curves and the orientation of the composites before and after compression were measured by the thermal simulator and the image analyzer. The results show that whisker orientation and deformation temperature have an important effect on the compressive behavior of composites. Plastic deformation is only a necessary condition for whisker rotation. The orientation of whiskers and deformation temperature determine the uniformity of deformation.