The development of adscititious particle reinforced aluminium matrix composites and al matrix in - situ composites reinforced by reaction synthesis " reinforcement phase are reviewed at first . and the papers point out the difficulties and problems on the study of al matrix composites at present 本文首先回顾了外加颗粒增强铝基复合材料和反应合成强化物增强铝基原位复合材料的研究进展，指出当前铝基复合材料研究中存在的问题。
