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

被引：11
作者：
Liu, Q [1 ]
Chen, CZ
Cui, JZ
机构：
[1] Northeastern Univ, Minist Educ, Key Lab Electromagnet Proc Mat, Shenyang 110004, Peoples R China
[2] Shenyang Inst Chem Technol, Sch Mech Engn, Shenyang 110142, Peoples R China
[3] Shenyang Univ Technol, Sch Mech Engn, Shenyang 110023, Peoples R China
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2005年 / 36A卷 / 06期
关键词：
D O I：
10.1007/s11661-005-0231-z
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A series of Al-Li-Cu alloys with copper content of 0 to 6 wt pet and lithium content of 2.5 wt pet 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 pet 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.
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收藏
页码：1389 / 1394
页数：6
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