Effect of copper content on mechanical properties and fracture behaviors of Al-Li-Cu alloy

被引：0
|
作者：
Qiang Liu
Chang-Zheng Chen
Jian-Zhong Cui
机构：
[1] Shenyang Institute of Chemical Technology,School of Mechanical Engineering
[2] Shenyang University of Technology,the School of Mechanical Engineering
[3] Northeastern University,the Key Lab of Electromagnetic Processing of Materials, Ministry of Education
来源：
Metallurgical and Materials Transactions A | 2005年 / 36卷
关键词：
Material Transaction; Fracture Behavior; Copper Content; Lithium Content; Ductile Dimple;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A series of Al-Li-Cu alloys with copper content of 0 to 6 wt pct and lithium content of 2.5 wt pct were studied. The results showed that copper plays an important role in grain refining, homogenization, and aging, and significantly influences the mechanical properties and fracture behaviors of the alloys. With the addition of copper, the hardness and peak-aging time increase, and the tensile strength gradually increases to a maximum value with copper content of about 3 wt pct and decreases after that. However, elongation decreases constantly, and the crack roots increase and lead to early crack. The mechanism of mechanical properties and fracture behaviors of Al-Li-Cu alloy is also discussed.
引用
收藏
页码：1389 / 1394
页数：5
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