Contactless surface flattening of additive manufactured nickel-base alloy parts by ultra-short pulsed laser ablation
Open access
Datum
2020Typ
- Conference Paper
ETH Bibliographie
yes
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Abstract
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. Mehr anzeigen
Persistenter Link
https://doi.org/10.3929/ethz-b-000462589Publikationsstatus
publishedExterne Links
Buchtitel
20th CIRP Conference on Electro Physical and Chemical MachiningZeitschrift / Serie
Procedia CIRPBand
Seiten / Artikelnummer
Verlag
ElsevierKonferenz
Thema
Ultra short-pulse laser ablation; Surface flattening; Laser flattening; Nd:YAG; CM247LC; Ni-base alloy; Post-treatment selective laser melting; Post treatment of AM parts; Surface treatment; Ni-alloy processingOrganisationseinheit
03641 - Wegener, Konrad (emeritus) / Wegener, Konrad (emeritus)
Anmerkungen
Conference lecture held on January 20, 2021. Due to the Coronavirus (COVID-19) the conference was conducted virtually.ETH Bibliographie
yes
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