A multi-technique tomography-based approach for non-invasive characterization of additive manufacturing components in view of vacuum/UHV applications: preliminary results

Abstract In this paper, we have studied an additively manufactured metallic component, intended for ultra-high vacuum application, the exit-snout of MACHINA transportable proton accelerator beam-line. Metal additive manufacturing components can exhibit heterogeneous and anisotropic microstructures. Two non-destructive imaging techniques, X-ray computed tomography Neutron Tomography, were employed to examine its microstructure. They unveiled presence porosity channels, size composition grains intergranular precipitates, general behavior spatial distribution solidification lines. While evidenced qualitative details about surface roughness internal defects, neutron showed excellent ability in density within component. The anisotropy was attributed material building orientation during 3D printing process. Density variations suggest possibility defect pathways, which could affect high performances. addition, these results highlight importance considering design UHV applications. Graphical