Effect of Laser Shock Peening on Fretting Fatigue Life of TC11 Titanium Alloy
College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
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Materials 2020, 13(21), 4711; https://doi.org/10.3390/ma13214711
Received: 2 September 2020
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Revised: 8 October 2020
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Accepted: 21 October 2020
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Published: 22 October 2020
(This article belongs to the Special Issue Laser Technologies in Metal-Based Materials)
The purpose of this paper is to investigate the performance of laser shock peening (LSP) subjected to fretting fatigue with TC11 titanium alloy specimens and pads. Three laser power densities (3.2 GW/cm2, 4.8 GW/cm2 and 6.4 GW/cm2) of LSP were chosen and tested using manufactured fretting fatigue apparatus. The experimental results show that the LSP surface treatment significantly improves the fretting fatigue lives of the fretting specimens, and the fretting fatigue life increases most when the laser power density is 4.8 GW/cm2. It is also found that with the increase of the laser power density, the fatigue crack initiation location tends to move from the surface to the interior of the specimen.
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Keywords:
fretting fatigue; laser shock peening; laser power density; TC11 alloy
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MDPI and ACS Style
Yang, X.; Zhang, H.; Cui, H.; Wen, C. Effect of Laser Shock Peening on Fretting Fatigue Life of TC11 Titanium Alloy. Materials 2020, 13, 4711. https://doi.org/10.3390/ma13214711
AMA Style
Yang X, Zhang H, Cui H, Wen C. Effect of Laser Shock Peening on Fretting Fatigue Life of TC11 Titanium Alloy. Materials. 2020; 13(21):4711. https://doi.org/10.3390/ma13214711
Chicago/Turabian StyleYang, Xufeng, Hongjian Zhang, Haitao Cui, and Changlong Wen. 2020. "Effect of Laser Shock Peening on Fretting Fatigue Life of TC11 Titanium Alloy" Materials 13, no. 21: 4711. https://doi.org/10.3390/ma13214711
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