Enhancement of fatigue properties of 2024-T351 aluminum alloy processed by cryogenic laser peening

被引：11
|
作者：
Li, Jing [1 ,2 ,3 ]
Feng, Aixin [2 ,3 ]
Zhou, Jianzhong [1 ]
Chen, Huan [2 ,3 ]
Sun, Yunjie [1 ]
Tian, Xuliang [1 ]
Huang, Yu [1 ]
Huang, Shu [1 ]
机构：
[1] Jiangsu Univ, Sch Mech Engn, Zhenjiang 212013, Jiangsu, Peoples R China
[2] Wenzhou Univ, Coll Mech & Elect Engn, Wenzhou 325035, Peoples R China
[3] Wenzhou Univ, Inst Laser & Opto Elect Mfg, Wenzhou 325024, Peoples R China
来源：
VACUUM | 2019年 / 164卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
2024-T351 aluminum alloy; Cryogenic laser peening; Fatigue properties; Nano-hardness; Microstructure; MICROSTRUCTURAL EVOLUTION; MECHANICAL-PROPERTIES; TENSILE PROPERTIES; TEMPERATURE; RESISTANCE;
D O I：
10.1016/j.vacuum.2019.02.030
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The tensile fatigue performance of 2024-T351 aluminum alloy processed by room temperature laser peening (RT-LP) and cryogenic laser peening (CLP) were explored. The nanoindentation measurement was performed. Scanning electron microscopic and transmission electron microscopic were used to inspect the microstructure evolution. Experimental results indicated that tensile fatigue life of the specimen subjected to CLP increased by 6.8% when compared with the RT-LP specimen. Additionally, CLP could induce finer grain and higher-density of dislocation structure, which have an important contribution to improving the nano-hardness and tensile fatigue properties of 2024-T351 aluminum alloy.
引用
收藏
页码：41 / 45
页数：5
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