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利用退火实验、金相观察及高温拉伸实验， 采用复合材料与基体合金对比的方法， 对ＸＤ 法（ 即原位反应法） 制备的ＴｉＣ（６ ％ ）／２６１８ 复合材料的再结晶过程和高温力学性能进行了研究。结果表明： 通过ＸＤ 法在２６１８ 合金中加入的硬度高而尺寸细小的ＴｉＣ 增强相能阻碍基体的再结晶， 使其再结晶温度至少提高了５０ ℃； 同时， 在高温拉伸时， ＴｉＣ 粒子能有效阻碍位错运动， 从而提高复合材料的高温力学性能。
The microstructure of TiC (6%) / 2618 composites prepared by XD method (in-situ reaction) and the high temperature Mechanical properties were studied. The results show that the TiC reinforced phase with high hardness and small size added by XD method can hinder the recrystallization of the matrix and increase the recrystallization temperature by at least 50 ℃. At the same time, the tensile strength of TiC particles Effectively impeding the dislocation movement, thereby enhancing the high temperature mechanical properties of the composite material.