一种铝基复合材料的制备技术

Preparation Technique of An Aluminum Matrix Composites

研究了加工道次对PI颗粒增强Al7075复合材料显微组织、微观硬度和耐磨性的影响。研究表明:FSP技术可以使得材料组织细化、显微硬度提高且磨损体积下降;添加PI颗粒后复合改性层的显微硬度要低于FSP样品的显微硬度,且磨损体积较FSP样品有所下降;增加加工道次可以使得复合改性层的显微硬度提高、磨损体积降低。

In this paper, the effects of the processing passes on the microstructure , microhardness and wear resistance of Al7075/PI composites are investigated. The results show that the microstructure of FSP samples is refined, the microhardness increases and the wear volume decreases. While adding PI particles, the microhardness and wear volume of the composite modified layer decreases.The microhardness of the composite modified layer increases and the wear volume of the composite modified layer decreases with the increase of the process passes.