i对Al3Fe增强铝基复合材料组织和性能的影响

he effects of Ti to microstructures and properties of Al3Fe enhanced aluminum matrix composite material were investigated by optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive spectrum (EDS), X-ray diffractomer (XRD) and hardness test. The results show that the morphology of primary Al3Fe changes from long acicular shape with slight branches to short rod-like shape and the hardness of material rises with the increase of the addition of Ti in a limited scope.The refinement effect is best as the addition of Ti is 3 wt. %, meanwhile, the hardness reaches a high point. The primary Al3Fe became larger and the divorced eutectic Al3Fe appears when the addition of Ti exceeds 3 wt. %, the hardness of material reduces. As Ti is added more, a mass of Al3Ti appear besides Al3Fe, the hardness of material rises again.