Laser milling of martensitic stainless steels using spiral trajectories
Authors: Romoli L., Tantussi F., Fuso F.
Autors Affiliation: Department of Industrial Engineering, University of Parma, Italy
Department of Physics “Enrico Fermi” and CNISM, University of Pisa, Italy
INO-CNR, Pisa, Italy
Abstract: A laser beam with sub-picosecond pulse duration was driven in spiral trajectories to perform micro-milling of martensitic stainless steel. The geometry of the machined micro-grooves channels was investigated by a specifically conceived Scanning Probe Microscopy instrument and linked to laser parameters by using an experimental approach combining the beam energy distribution profile and the absorption phenomena in the material. Preliminary analysis shows that, despite the numerous parameters involved in the process, layer removal obtained by spiral trajectories, varying the radial overlap, allows for a controllable depth of cut combined to a flattening effect of surface roughness. Combining the developed machining strategy to a feed motion of the work stage, could represent a method to obtain three-dimensional structures with a resolution of few microns, with an areal roughness S-a below 100 nm.
Journal/Review: OPTICS AND LASERS IN ENGINEERING
Volume: 91 Pages from: 160 to: 168
More Information: DOI: 10.1016/j.optlaseng.2016.11.016 KeyWords: Laser; Micro machining; Stainless steel; Roughness; DOI: 10.1016/j.optlaseng.2016.11.016Citations: 12data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2020-08-02References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here