Jianyun Xiang, Maozhong Ge, Taiming Wang. Effect of Laser Shock Peening on High-Temperature Tensile Property of GH3039 Superalloy[J]. Laser & Optoelectronics Progress, 2022, 59(7): 0716002
- Laser & Optoelectronics Progress
- Vol. 59, Issue 7, 0716002 (2022)
Fig. 1. High-temperature tension specimen. (a) Dimension; (b) real picture
Fig. 2. Microstructures of GH3039 supe alloy before and after LSP at room temperature. (a) Base metal; (b) LSP sample
Fig. 3. Microstructure of LSP GH3039 after exposure at 600 ℃ for 5 h
Fig. 4. Residual stress distributions in surface layer of GH3039 superalloy before and after LSP
Fig. 5. Tensile stress-strain curves of GH3039 base metal and LSP sample tested at 600 ℃
Fig. 6. EDS analysis results of fracture of high-temperature tensile specimen. (a) Base metal; (b) LSP sample; (c) analysis result of point C in Fig. 6 (a); (d) analysis result of point D in Fig. 6 (a); (e) analysis result of point E in Fig. 6 (b); (f) analysis result of point F in Fig. 6 (b)
Fig. 7. Microstructures of high-temperature tensile fracture of GH3039. (a) Base metal; (b) LSP sample
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Table 1. Chemical compositions of GH3039 (mass fraction, %)
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Table 2. Laser process parameters
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Table 3. Thermal relaxation of residual stress in LSP GH3039 at 600 ℃
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Table 4. Tensile test results of GH3039 at 600 °C
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