对弥散质点和SiC颗粒复合强化铝基复合材料的拉伸蠕变研究表明，复合强化铝基复合材料比单纯弥散强化的基体合金的蠕变速率低2—4个数量级：复合材料和基体合金的蠕变应力指数和蠕变激活能比纯Al的大.用门槛应力的概念对蠕变数据进行分析表明、这种复合材料蠕变是由基体晶格扩散控制的
Creep of dispersoids and SiC particulates reinforced aluminium base composites has been studied. Creep rate of the composites is 2-4 orders of magnitude lower than those of the matrix alloy. The creep stress exponent and activation energy of the composites are much larger than those of pure aluminium. The experimental data of creep has been analysed by the threshold stress approach. It is demonstrated that the creep of the composites is controlled by the lattice diffusion of aluminium.
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