Yupeng CAO, Shuai WANG, Weidong SHI, Ming QIU, Guoran HUA, Bin LI. Effect of Laser Shock on Microstructure of the Repair Layer of E690 High Strength Steel by Laser Cladding[J]. Acta Photonica Sinica, 2021, 50(4): 91
- Acta Photonica Sinica
- Vol. 50, Issue 4, 91 (2021)
Fig. 1. Flat samples
Fig. 2. Laser shock area and light spots overlap
Fig. 3. Schematic diagram of residual stress measurement points
Fig. 4. Schematic diagram of sample preparation corresponding and observation area to various test methods
Fig. 5. XRD pattern of repaired layer of sample No.1
Fig. 6. SEM morphology and energy spectrum scanning of sample No.1
Fig. 7. Typical surface TEM image of sample No.1
Fig. 8. Typical SEM morphology of sample No.2 repaired layer
Fig. 9. Typical TEM image of the surface area by laser shock on sample No.2
Fig. 10. Lath martensite image of the surface area by laser shock on sample No.2
Fig. 11. Residual stress measurement results of sample No.1 and No.2
Fig. 12. Schematic diagram of laser shock induced residual compressive stress
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Table 1. Chemical composition quality score of substrate and powder
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Table 2. Process parameters of laser cladding repair process
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Table 3. EDS analysis of each area atomic fraction of sample No.1 repair layer
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