关键词: 复合材料, 蠕变分析, 位错

Abstract: The deformation process and mechanism of microcreep of SiCp/Al composites are inves-tigated by the measurement of microcreep properties and analysis of transmlssion electron mi-croscopy,Results show that the process of microcreep deformation behavior of SICp/Al compos-ites can be divided into two;tages,the stage of moving dislocations defletion and the stage of dis-locations movement;the latter is the main cause of microcreep of SiCp/Al composites.The precip-itation phases and reinforcement particles in the SiCp/Al composites are important factors of in-creasing resistance to microcreep.

Key words: composite materials, creep analysis, dislocations (materials)