Effect of minor Sc and Zr on microstructures and mechanical properties of Al-Zn-Mg based alloys

被引：0
|
作者：
Yin, Zhi-Min [1 ]
Yang, Lei [1 ]
Pan, Qing-Lin [1 ]
Jiang, Feng [1 ]
机构：
[1] Dept. of Mat. Sci. and Eng., Cent. South Univ., Changsha 410083, China
来源：
Transactions of Nonferrous Metals Society of China (English Edition) | 2001年 / 11卷 / 06期
关键词：
Ductility - Joints (structural components) - Microstructure - Scandium - Strengthening (metal) - Tensile strength - Zirconium;
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学科分类号：
摘要：
Two kinds of Al-Zn-Mg based alloys with and without Sc, Zr addition were prepared by ingot metallurgy. Their tensile mechanical properties and microstructures 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 reasons of strength increment are fine-grain strengthening, substructure strengthening and precipitation strengthening of Al3 (Sc, Zr).
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页码：822 / 825
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