Yang Tang, Maozhong Ge, Taiming Wang, Jianyun Xiang. Effect of Laser Shock Peening on Fatigue Life of GH3039 Superalloy[J]. Laser & Optoelectronics Progress, 2019, 56(22): 221401
- Laser & Optoelectronics Progress
- Vol. 56, Issue 22, 221401 (2019)
Fig. 1. Shape and size of fatigue specimen
Fig. 2. Fatigue sample after LSP and laser scanning direction
Fig. 3. Cross-sectional microstructure of original sample of GH3039 superalloy
Fig. 4. Microstructure of GH3039 superalloy after LSP. (a) Cross section; (b) local magnification in Fig. 4(a)
Fig. 5. Residual stress state at tested point for different sample surfaces. (a) Original sample; (b) sample after LSP
Fig. 6. Three-dimensional topographies of different sample surfaces. (a) Original sample; (b) sample after LSP
Fig. 7. Morphologies of fatigue fractures of different samples
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Table 1. Chemical composition of GH3039 superalloy
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Table 2. Surface residual stress of original sample and sample after LSP
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Table 3. Fatigue cycles of GH3039 superalloy before and after LSP
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