Effect of minor Sc and Zr on microstructures and mechanical properties of Al-Zn-Mg based alloys
来源期刊：中国有色金属学报(英文版)2001年第6期
论文作者：尹志民 杨磊 潘青林 姜锋
文章页码：822 - 825
Key words：aluminum alloy; Sc; Zr; microstructure; mechanical properties
Abstract: Two kinds of Al-Zn-Mg based alloys with and without Sc, Zr addition were prepared by ingot metallurgy. The tensile mechanical properties and microstructures of the studied alloys at different treatment conditions were studied. The results show that addition of minor Sc and Zr can remarkably improve the strength of Al-Zn-Mg based alloys, but the ductility remains on a higher level. The strength increment is mainly due to fine-grain strengthening, substructure strengthening and precipitation strengthening of Al3(Sc,Zr).
