喷射成形技术制备高性能铝合金材料

High-property Aluminum Alloys Prepared by Spray-forming Process

采用喷射成形技术制备了过共晶Al-Si系高强耐磨铝合金和Al-Zn系(7000系)超高强铝合金,并对上述喷射成形材料的组织、性能进行了研究。结果表明,喷射成形材料与传统铸造材料或铸造变形加工材料相比,基体组织被显著细化、析出相尺寸更为细小且分布更加均匀、各种析出相的宏观和微观偏析得到了有效控制,从而使其各项力学性能得到了明显的提高。还同时介绍了上述喷射成形高性能铝合金在工业发达国家中的大规模应用情况,以及我国的应用开发现状。

Hyper-eutectic Al-Si alloys and ultra-high strength Al-Zn alloys were prepared by spray-forming process. The microstructure and properties of these materials were analysised- The result shows that aluminum alloys manufactured by spray forming exhibit many advanges such as fine primary phase particles.no macrosegregation and improved properties over the conventional casting alloys. At the same time,the current application of spray forming technology in developed countries and R & D work in our country were outlined.