论文部分内容阅读
本文简述了Al-Zn-Mg-Cu系超高强铝合金的发展历程,指出其演化途径主要是主合金成分范围精确控制,添加微量元素,降低杂质含量,以及采用先进的热处理工艺和制备成形技术,以期获得最佳的综合性能。并指出了在提高溶质含量改善合金强度的同时,高合金化导致锭坯成形过程中存在许多问题。为此,作者介绍了喷射沉积快速凝固技术的特点及其在高溶质含量7系铝合金中的应用情况。认为喷射成形是在传统快速凝固/粉末冶金工艺基础上发展起来的高效短流程材料制备技术,既较好地解决了铸造工艺凝固缓慢、宏观偏析等问题,又突破了粉末冶金工艺繁琐易氧化、构件规格小的技术瓶颈,是制备现有以及进一步发展高强铝合金材料的先进工艺。
This paper describes the history of Al-Zn-Mg-Cu ultra-high strength aluminum alloy and points out that its evolution route is mainly the precise control of the main alloy composition range, the addition of trace elements, reducing the content of impurities, and the use of advanced heat treatment process and preparation Technology, in order to obtain the best overall performance. And pointed out that in improving the solute content to improve the strength of the alloy at the same time, the high alloyed ingot billet forming process there are many problems. For this reason, the author introduced the characteristics of rapid solidification by spray deposition and its application in high solute content 7 series aluminum alloy. It is considered that injection molding is an efficient and short process material preparation technology developed on the basis of the traditional rapid solidification / powder metallurgy process, which not only solves the problems of slow solidification and macrosegregation in the casting process, but also breaks through the cumbersome and easy oxidation of powder metallurgy process, Component specifications of small technical bottlenecks, is the preparation of existing and further development of high-strength aluminum alloy advanced technology.