Laser shock peening on fatigue behavior of 2024-T3 Al alloy with fastener holes and stopholes

被引：129
|
作者：
Yang, JM [1 ]
Her, YC
Han, NL
Clauer, A
机构：
[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA
[2] LSP Technol, Dublin, OH USA
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2001年 / 298卷 / 1-2期
关键词：
laser shock peening; residual stress; fatigue behavior;
D O I：
10.1016/S0921-5093(00)01277-6
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of laser shock peening on the fatigue behavior of 2024-T3 aluminum alloy with a fastener hole, multiple crack stopholes and single-edge notch was investigated. Laser shock peening (LSP) was performed under a 'confined ablation mode' using a Nd:glass laser at a laser power density of 5 GW cm(-2). The fatigue crack initiation life and fatigue crack growth rates of the Al alloy, with different preexisting notch configurations, were characterized and compared with those of the unpeened material. The results clearly show that LSP is an effective surface treatment technique for improving the fatigue performance of Al alloys having various preexisting notch configurations. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：296 / 299
页数：4
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