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Additive manufactured titanium alloy microlattice structures are attracting the attention of numerous industrial fields, since they allow a customised and optimised design of components and structures.

In the current work, Electron Beam Melting (EBM) technique was used to produce Ti6Al4V ELI rhombic dodecahedron (RD) microlattice structures. Preliminary tests on bulk specimens highlighted the effect of surface roughness on mechanical response. A confocal microscope was used to characterise surface topography and to obtain a precise evaluation of surface roughness, which is a critical point in EBM technique.

Three different unit cell sizes were selected in order to investigate the effect of cell dimensions on microlattice mechanical properties. Morphological evaluations were performed through Computed Tomography (CT) technique, which allowed the comparison of the real models to the designed one …