Speaker
Description
Reliably using additively manufactured components in linear accelerators requires consistent quality, even for a single-unit production run. This necessitates a comprehensive understanding of transient defect formation within the component, which is influenced by highly dynamic process phenomena. High-speed X-ray imaging provides the necessary spatial and temporal resolution to directly observe melt pool and keyhole dynamics during laser powder bed fusion (PBF-LB). This allows for the identification of relationships between processing conditions and keyhole behavior, porosity and spatter formation. Thus, it supports developing robust process windows and process-structure-property relationships. This talk will discuss how these fundamental insights can be applied to laser processing copper and its alloys as important materials for thermally and electrically demanding accelerator components. Finally, the presentation will outline the potential of complementary laser powder- and wire-fed directed energy deposition routes for manufacturing, repairing, and qualifying larger or functionally integrated components.