超高强铝合金的研究现状及发展趋势

来源期刊：中南大学学报(自然科学版)2002年第6期

论文作者：曾渝 尹志民 潘青林 郑子樵 刘志义

文章页码：592 - 596

关键词：铝合金;合金化;微观组织;热处理;应力腐蚀

Key words：aluminum alloy; alloying; microstructure; heat treatment; stress corrosion

摘    要：超高强铝合金具有很高的强度,同时又具有较强的韧性,是航空航天领域极具应用前景的轻质高强结构材料.作者在查阅大量文献的基础上,结合课题组试制工作,介绍了国内外超高强铝合金的发展应用概况,对Zn,Mg,Cu,Zr等元素在合金中的添加量、存在形式和作用机制进行了综述.通过对比分析,探讨了合金最佳性能所对应的显微组织结构模式.此外,还介绍了合金的3种主要时效处理工艺和抗应力腐蚀模型,并针对超高强铝合金目前存在的问题,提出了今后研究开发的方向.

Abstract: Possessing high strength and toughness, ultra high strength aluminum alloy is a kind of structural material with light weight and high strength, which can be applied widely in the aviation and aerospace fields. Based on a tremendous amount of data and some experiments by the researching group, this paper introduces the development and applications of ultra high strength aluminum alloys, and discusses the addition, existential formand functioning mechanism of such compositions as Zn, Mg, Cu and Zr. Comparing and analyzing a number of data, the thesis discusses the microstructural mode corresponding to the best properties. Additionally, three main aging treatments and two successful stress corrosion resistance models are also reviewed in this paper. In the end, aiming at the existing problems of the present study, the paper puts some suggestions for the future exploration of the high strength aluminum alloys.