Xiangwei Yang, Jianzhong Zhou, Jie Sheng, Xiankai Meng, Shu Huang, Yingqiu Yang. Microstructure Evolution and Surface Strengthening Mechanism of TC6 Titanium Alloy by Laser Peening[J]. Acta Optica Sinica, 2017, 37(9): 0914001
- Acta Optica Sinica
- Vol. 37, Issue 9, 0914001 (2017)
Fig. 1. (a) LP path; (b) surface topography of sample with aluminum foil; (c) surface topography of sample without aluminum foil
Fig. 2. Schematic of LP
Fig. 3. Schematic of performance test positions
Fig. 4. Microstructures of samples. (a) Grain morphology without LP; (b) grain morphology with LP; (c) microstructure without LP; (d) microstructure with LP
Fig. 5. Cross-sectional microstructures of sample with LP
Fig. 6. TEM images of LP samples under different power densities. (a) Without LP; (b) 4 GW·cm-2; (c) 5 GW·cm-2; (d) 6 GW·cm-2
Fig. 7. (a) Microhardness distributions; (b) residual stress distributions
Fig. 8. Schematic of titanium alloy grain refinement by LP
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Table 1. Chemical compositions of TC6 titanium alloys (mass fraction, %)
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Table 2. Mechanical property of TC6 titanium alloys
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