Effect of precipitation on elastic modulus of Al-Zn-Mg-Cu-Li alloys

被引：0

作者：

赵中魁

周铁涛

刘培英

李焕喜

陈昌麒

机构：

[1] School of Materials Science and Engineering Beijing University of Aeronautics and Astronautics

[2] Beijing 100083

[3] China

[4] Shandong Jianzhu University

[5] Jinan 250101

来源：

TransactionsofNonferrousMetalsSocietyofChina | 2006年 / S3期

关键词：

Al-Zn-Mg-Cu-Li alloys; ageing; precipitates; elastic modulus; yield strength;

D O I：

暂无

中图分类号：

TG115 [金属的分析试验（金属材料试验）];

学科分类号：

080502 ;

摘要：

Al-5.6Zn-3.0Mg-1.6Cu-1.1Li-0.24Cr alloys and Al-8.0Zn-2.4Mg-2.4Cu-1.1Li-0.18Zr alloys (mass fraction, %) were aged by different processes. The microstructure and mechanical properties were determined by transmission electron microscopy(TEM), tensile test and Vicker’s hardness test. The experimental results show that the most signified hardening is obtained by double-ageing or multi-ageing for the Al-Zn-Mg-Cu-Li alloys. The yield strength and the elastic modulus of the Li-containing alloys have relationships with ageing processes. The elastic modulus of Li-containing alloys decreases with the increment of precipitates though it is higher than that of Al-Zn-Mg-Cu alloy.

引用

页码：1610 / 1613

页数：4