Different Approaches for Manufacturing Ti-6Al-4V Alloy with Triply Periodic Minimal Surface Sheet-Based Structures by Electron Beam Melting

Targeting biomedical applications, Triply Periodic Minimal Surface (TPMS) gyroid sheet-based structures were successfully manufactured for the first time by Electron Beam Melting in two different production Themes, i.e., inputting a zero (Wafer Theme) and 200 µm (Melt wall thickness. Initial assumption was that both cases, EBM manufacturing should yield with similar mechanical properties as Wafer-mode, thickness is determined minimal beam spot size of ca µm. Their surface morphology, geometry, investigated means electron microscopy (SEM), X-ray Computed Tomography (XCT), uniaxial tests (both compression tension). Application Themes resulted specimens thicknesses while quasi-elastic gradients found to be 1.5 GPa, elastic modulus human cortical bone tissue. The specific energy absorption at 50% strain also types structures. Finite element simulations conducted qualitatively analyze deformation process stress distribution under load. Simulations demonstrated regime wall, regions oriented parallel load are primarily affected deformation. We could conclude gyroids Wafer Melt equally effective mimicking bones.