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Contactless surface flattening of additive manufactured nickel-base alloy parts by ultra-short pulsed laser ablation
- Conference Paper
Rights / licenseIn Copyright - Non-Commercial Use Permitted
Nickel-base alloy samples produced by selective laser melting (SLM) exhibit high surface roughness of 14.2 μm ±4.8 μm standard deviation at the sidewalls. Ultra-short pulsed (USP) laser ablation at a pulse duration of 10 ps is applied to reduce the surface roughness. This flattening method does not require a melting phase. The influence of the tilt angle and the orientation of the SLM layers on the surface topography of the sample is investigated. Orthogonal laser ablation of Ni-base alloy samples leads to irregular surface topography and exposure of sharp spikes. Surface flattening by laser ablation is demonstrated applying a tilt angle of 80° in combination with a projected pulse fluence of 0.21 J/cm². A significant influence of the tilt angle and SLM layer orientation on the surface roughness is observed. Show more
Journal / seriesProcedia CIRP
Pages / Article No.
SubjectUltra short-pulse laser ablation; Post treatment of AM parts; Surface treatment; Ni-alloy processing
Organisational unit03641 - Wegener, Konrad / Wegener, Konrad
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