【摘要】 利用超显微硬度仪测量纤维、颗粒增强铝基复合材料内不同微区的超显微硬度，发现界面区附近越显微硬度值明显增高．显微硬度值与基体、增强体的性质、界面性能、增强体的尺寸、形状、分布有密切关系．微区力学性能的不均匀性将影响复合材料的宏观性能和尺寸稳定性更多还原

【Abstract】 Ultramicrohardness tester has been used to test the hardness in the different microzones ofaluminum matrix composites reinforced by fibers or particulates. It is found that the ultramicrohardness value increases apparently near the interface, and that the hardness has an intimate relation with the propertiesof reinforcement and the matrix, the characteristic of the interface and the size, shape and distribution of thereinforcement. The heterogeneity will affeCt the macroscopic properties and the size stability of the comPOsites.更多还原