Wei Peng, Hui Lei. Effect of Energy Density on Surface Morphology and Properties of H13 Mold Steel via Picosecond Laser Cleaning[J]. Laser & Optoelectronics Progress, 2021, 58(17): 1714002
- Laser & Optoelectronics Progress
- Vol. 58, Issue 17, 1714002 (2021)
Fig. 1. Surface morphology after laser cleaning under different energy densities.（a）Original surface；（b）1 J/cm2；（c）2 J/cm2；（d）3 J/cm2；（e）4 J/cm2；（f）5 J/cm2
Fig. 2. Cross-section morphology after laser cleaning under different energy densities.（a）Original cross-section；（b）2 J/cm2；（c）3 J/cm2；（d）4 J/cm2
Fig. 3. SEM images of real-time monitoring of temperature field under different energy densities.（a）245 ℃；（b）497 ℃；（c）156 ℃；（d）337 ℃；（e）536 ℃；（f）183 ℃
Fig. 4. Test results of surface hardness and phase composition after laser cleaning.（a）Surface hardness；（b）phase composition
Fig. 5. EDS test results of mold surface under different laser energy densities.（a）2 J/cm2；（b）3 J/cm2
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Table 1. Chemical composition of H13（4Cr5MoSiV1）steel
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