|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Multiscale Architectured Materials (MAM II): Tailoring Mechanical Incompatibility for Superior Properties
||Impact Behavior of Lattice Structures Produced by Selective Laser and Electron Beam Melting
||Pauline Delroisse, Nicolas Bruzy, Olivier Rigo, Sébastien Michotte, Eric Maire, Jérôme Adrien, Pascal Jacques, Thierry Massart, Aude Simar
|On-Site Speaker (Planned)
The fast development of additive manufacturing technologies allows the optimization of lattice structures in particular, in the present study, for impact energy absorption. Since their properties depend on parameters such as build material or core morphology, the project compares different combinations: strut geometry (various diameter and roughness reduced through chemical etching), materials (AlSi10Mg or Ti-6Al-4V), processed by two metal additive manufacturing techniques (SLM or EBM), covered or not by Al2024 plates and with or without post-treatment. The deformation mechanisms after compression and impact tests are characterized in particular by 3D X-ray tomography. The structures may thus be optimized in order to delay failure. In addition, a simplified model based on beam theory allows understanding the static and dynamic behaviors of these lattice structures.