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利用透射电子显微镜（ＴＥＭ）对不同条件下形成的石墨长纤维增强Ａｌ－Ｔｉ（０．３５ａｔ％）基复合材料的界面微观结构进行了比较研究。用高分辨象透射电子显微术研究了ＡＡｌ＿４Ｃ＿３的生长规律，结果表明Ａｌ＿４Ｃ＿３顶端与Ａｌ基体间的界面粗糙，生长机制为连续生长。两种生长机制在不问的生长驱动力作用下，具有不同的相对生长速率。因此在不同的材料制备工艺条件下，Ａｌ＿４Ｃ＿３的形态也表现出不同的特点。讨论了纤维分布情况对界面微观结构的影响，认为适当降低纤维体积含量对于进一步改善复合材料性能有利。
The interfacial microstructures of Al-Ti (0.35at%) matrix composites reinforced by graphite long fibers were investigated by transmission electron microscopy (TEM). The growth of AAl_4C_3 was studied by high resolution transmission electron microscopy. The results showed that the interface between Al_4C_3 tip and Al matrix was rough and the growth mechanism was continuous growth. Two kinds of growth mechanisms do not ask the growth-driven force, have different relative growth rate. Therefore, under different material preparation conditions, the morphology of Al_4C_3 also shows different characteristics. The effect of fiber distribution on the microstructure of the interface was discussed. It is considered that proper reduction of fiber volume content is beneficial to further improve the properties of the composites.