Jie Yin, Houming Zhou, Zhenyu Zhao, Hao Zhou, Kai Li, Chao Wang. Experimental Research on Laser Polishing of DC53 Hardened Steel[J]. Laser & Optoelectronics Progress, 2023, 60(1): 0114004
- Laser & Optoelectronics Progress
- Vol. 60, Issue 1, 0114004 (2023)
Fig. 1. Laser polishing test. (a) Device diagram; (b) principle diagram
Fig. 2. Effect of scanning speed on surface roughness under different powers
Fig. 3. Scatter plot. (a) Energy density and surface roughness; (b) energy density and surface roughness reduction rate
Fig. 4. Mechanism of laser polishing. (a) Incomplete melting; (b) shallow surface melting; (c) surface over melting
Fig. 5. Comparison of surface topography before and after laser polishing. (a) Before laser polishing; (b) after laser polishing
Fig. 6. Effect of different scanning spacings on surface roughness
Fig. 7. Surface morphology of sample 2 after laser polishing
Fig. 8. Comparative analysis of laser polishing results. (a) Surface profiles before and after polishing; (b) power spectral density analysis results
Fig. 9. Internal structure and properties of the material after polishing. (a) Microstructure; (b) hardness; (c) internal Young's modulus
Fig. 10. Microstructure of each region of DC53 material under 1000× scanning electron microscope. (a) Melting zone; (b) heat affected zone; (c) annealing zone; (d) matrix zone
Fig. 11. Tafel curves before and after polishing
Fig. 12. XRD diagram before and after laser polishing
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Table 1. Chemical composition of DC53 die steel
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Table 2. Experimental parameters
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Table 3. Self-corrosion potential, self-corrosion current density, and corrosion rate of DC53 before and after polishing
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