Influence of a Pronounced Pre-Deformation on the Attachment of Melt Droplets and the Fatigue Behavior of Laser-Cut AISI 304

Laser cutting is a suitable manufacturing method for generating complex geometries sheet metal components. However, their cyclic load capacity reduced compared to, example, milled This due to the influence of laser-cut edge, whose characteristic features act as crack initiation sites, especially resolidified material in form burr and melt droplets. Since components are often formed into final geometry after cutting, another important factor influencing fatigue behavior effect forming process on edge. In particular, high degrees deformation has not yet been researched detail. Accordingly, sheets AISI 304 were processed by laser pre-deformed. process, ?’-martensite content was set be comparable despite different deformation. It found that elongations caused large part adhesions fall off, but those still attaching partially detached thus an initial notch initiation. significantly lowered strength.