Optimization of metal foils surface finishing using vibration-assisted micro-forging

•Whether punch surface part with specimen or not is important for surface finishing.•Proper vibration parameters increase energy utilization for plastic deformation.•Thinner specimens with rougher surface are prone to gain a better surface.

The present study focuses on optimizing metal foils surface finishing using vibration-assisted micro-forging. Different experimental parameters and specimens were used, and percentage of energy used for plastic deformation was calculated to find out the best conditions for surface finishing. The result shows that whether punch surface part with specimen or not is very important for the final surface roughness. The best vibration amplitude is larger than 2.47 μm and initial static stress is around 140 MPa. It is also found that face-centered cubic metal specimens with rougher surface and lower thickness are prone to gain a better surface.

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