Effect of Pre-deformation on Microstructure and Properties of a Novel Aluminum-lithium Alloy

被引：0
|
作者：
Li Huaguan [1 ]
Hu Yubing [1 ]
Ling Juan [1 ]
Sun Zhonggang [2 ]
Liu Hongbing [2 ]
Zheng Xingwei [2 ]
Tao Jie [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Nanjing 211106, Jiangsu, Peoples R China
[2] Shanghai Aircraft Mfg Co Ltd, Shanghai 200436, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2016年 / 45卷 / 02期
关键词：
aluminum-lithium alloy; pre-deformation; aging treatment; toughness; precipitation behavior; PLASTIC-DEFORMATION; MECHANICAL-PROPERTIES; AL; ANISOTROPY; TOUGHNESS; EVOLUTION; STRENGTH;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of pre-deformation + artificial aging on microstructure and properties of a novel aluminum-lithium alloy was investigated to achieve the superior combination of strength and toughness. The mechanical properties were evaluated by tensile and tear test, and the precipitation behavior was primarily characterized by TEM. The results indicate that the samples after a pre-deformation + artificial aging possess preferable strength and toughness, owing to the precipitation of well-dispersed T1 (Al2CuLi) phases promoted by the plastic deformation. The formation and coarsening of PFZ are also effectively avoided in the condition. The better combination of strength and toughness could be obtained with the route of 4.5% pre-deformation + 145 degrees C, 35 h aging.
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页码：465 / 469
页数：5
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