scholarly journals Effects of laser shock processing, solid solution and aging, and cryogenic treatments on microstructure and thermal fatigue performance of ZCuAl10Fe3Mn2 alloy

China Foundry ◽  
2021 ◽  
Vol 18 (2) ◽  
pp. 155-162
Author(s):  
Guang-lei Liu ◽  
Yu-hao Cao ◽  
Lu-xin Shi ◽  
Meng-jie Zhang ◽  
Zhi-qiang Ye ◽  
...  
Keyword(s):  
Solid Solution ◽  
Thermal Fatigue ◽  
Fatigue Performance ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Shock Processing

Study of Micro-Scale Laser Shock Processing without Coating Improving the High Cycle Fatigue Performance of K24 Simulated Blades

2015 ◽  
Vol 42 (10) ◽  
pp. 1003002
Author(s):  
焦阳 Jiao Yang ◽  
何卫锋 He Weifeng ◽  
罗思海 Luo Sihai ◽  
周留成 Zhou Liucheng ◽  
李应红 Li Yinghong
Keyword(s):  
High Cycle Fatigue ◽  
Fatigue Performance ◽  
Cycle Fatigue ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Micro Scale ◽  
Shock Processing

Effects of Laser Shock Processing on Fatigue Performance of Ti-17 Titanium Alloy

2017 ◽  
Vol 36 (3) ◽  
pp. 285-290 ◽  
Author(s):  
Shuai Huang ◽  
Ying Zhu ◽  
Wei Guo ◽  
Hongchao Qiao ◽  
Xungang Diao
Keyword(s):  
Titanium Alloy ◽  
Electron Microscope ◽  
Stress Ratio ◽  
Fatigue Performance ◽  
Fatigue Properties ◽  
Basic Material ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Transmission Electron ◽  
Shock Processing

AbstractTi-17 titanium alloy was treated by laser shock processing (LSP) and the high-frequency fatigue properties were evaluated. The fatigue fracture and the microstructures were observed by scanning electron microscope (SEM) and transmission electron microscope (TEM). The result shows that the average fatigue life of the LSP sample increases 2.62 times at maximum stress 300 MPa under stress ratio is 0.1. The micro-hardness of the samples subjected to LSP increases 20 % compared with the basic material. The proliferation and tangles of dislocations of Ti-17 occurs and the density of dislocation increases after LSP treatment. The high dislocation density of LSP impacts changes the initiation of crack from corner to subsurface, and hinders the crack extension, thus increases the fatigue performance of the Ti-17.

Application of Laser Shock Processing to Improving the Fatigue Performance of Compressor Blade

2010 ◽  
Vol 135 ◽  
pp. 184-189
Author(s):  
Qi Peng Li ◽  
Ying Hong Li ◽  
Wei Feng He ◽  
Wei Li ◽  
Yu Qin Li
Keyword(s):  
Residual Stress ◽  
Compressive Residual Stress ◽  
Strengthening Mechanism ◽  
Compressor Blade ◽  
Fatigue Performance ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Vibration Strength ◽  
Vibration Fatigue ◽  
Shock Processing

The vibration strength under allowable value leads to the failure of compressor blade of certain aeroengine. In order to solve the problem, laser shock processing on blade was studied. First, the processed part of blade as well as the laser shock processing (LSP) parameters was established. Second, the influence of LSP and tumbling to the vibrate fatigue capability of blades were researched according to the application of the project. Third, the strengthening mechanism of LSP on improving the fatigue performance of the blade was studied. The results show that, LSP is consistently dependable and can prolong the vibration fatigue life of the blade efficiently. LSP can be placed after tumbling or directly replace it during the manufacturing of blade. The grain refinement, higher hardness and compressive residual stress are the three main reasons that enhance the fatigue capability of blade.

Effect of Laser Shock Processing on Fatigue Performance of 7075-T651 Aluminum Alloy

2010 ◽  
Vol 139-141 ◽  
pp. 430-433
Author(s):  
Rui Fang Chen ◽  
Hui Jiang ◽  
Yin Qun Hua ◽  
Yu Xiao Chen ◽  
Zhen Grong Cai
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Cyclic Load ◽  
Fatigue Testing ◽  
Cyclic Creep ◽  
Fatigue Performance ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
The Stability ◽  
Shock Processing

The effect of laser shock processing (LSP) on bending fatigue performance of 7075-T651 aluminum alloy was studied. LSP was performed on fatigue testing specimens with optimized parameters. Stress-life fatigue data were generated for both shocked and as-machined conditions. The fatigue improvements of LSP were discussed accounting for the effect of residual stress. The results show that shocked specimens exhibited significantly improved fatigue performance, with as-machined specimens having a factor of 1.6-4.4 improvement in fatigue life (depending on fatigue stress level). The stability of the residual stress induced by LSP under cyclic load was particularly investigated by means of X-ray diffraction measurements. Residual stress relaxation was observed. And the higher the cyclic load, the higher the relaxation rate. Due to the cyclic creep effect, the residual stress decreases linearly with the logarithm of the number of cycles.

Prediction of residual stress induced by laser shock processing based on artificial neural networks for FGH4095 superalloy

2021 ◽  
Vol 286 ◽  
pp. 129269
Author(s):  
Jiajun Wu ◽  
Yinghao Li ◽  
Jibin Zhao ◽  
Hongchao Qiao ◽  
Ying Lu ◽  
...  
Keyword(s):  
Neural Networks ◽  
Residual Stress ◽  
Artificial Neural Networks ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Artificial Neural ◽  
Shock Processing
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