Xiang Li, Weifeng He, Xiangfan Nie, Zhufang Yang, Sihai Luo, Yiming Li, Le Tian. Regularity of Residual Stress Distribution in Titanium Alloys Induced by Laser Shock Peening with Different Energy Spatial Distributions[J]. Laser & Optoelectronics Progress, 2018, 55(6): 061402
- Laser & Optoelectronics Progress
- Vol. 55, Issue 6, 061402 (2018)
Fig. 1. Schematics of LSP process. (a) Laser spot overlapping and LSP path; (b) distribution of residual stress test points
Fig. 2. Schematics of energy spatial distribution of laser beam. (a) Gaussian distribution; (b) flat-top distribution
Fig. 3. Surface residual stress distribution of specimens under different energy distributions. (a) Gaussian distribution; (b) flat-top distribution
Fig. 4. Residual stress of specimens along depth direction under different energy distributions
Fig. 5. Relationship between shock wave pressure and plastic deformation under different conditions. (a) Single spot; (b) spot lap
Fig. 6. Mean shock number and measured circle distribution for different spot areas
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Table 1. Chemical compositions of TC11 titanium alloys (mass fraction, %)
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Table 2. Mechanical properties of TC11 titanium alloys
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