Surface morphology evolution mechanisms of pulse laser polishing mold steel

Zehui Liu,Yiyang Hu,Mingyang Zhang,Wei Zhang,Jun Wang, Wenbo Lei,Chunming Wang

International Journal of Mechanical Sciences（2024）

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摘要

•The evaporation threshold for Cr12MoV steel ranges from 2.5 J/cm2 to 3.0 J/cm2.•The evaporation pressure has a negative effect on surface roughness.•Heat accumulation due to high-frequency pulses leads to continuous melt pools.•The SOM mechanism dominates high-frequency pulsed laser polishing process.

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关键词

Pulse laser polishing,High-frequency pulse,Numerical simulation,Melt pool dynamics,Surface morphology evolution

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