|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Advanced Characterization with Synchrotron, Neutron, and In Situ Laboratory-scale Techniques II
||In Situ Synchrotron Characterization of the Fatigue Behavior of WE43 Mg Porous Scaffolds for Biomedical Applications
||Dolores Martín, Guillermo Domínguez, Muzi Li, Federico Sket, Monica Echeverry-Rendón, Felix Benn, Alexander Kopp, Jon Molina-Aldareguía, Javier Llorca
|On-Site Speaker (Planned)
Porous cubic scaffolds of 10 x 10 x 10 mm3 of WE43 Mg alloy with different lattice structure and an average strut diameter of 500 µm were manufactured by laser powder bed fusion. They were surface modified by plasma electrolytic oxidation to improve the corrosion resistance and biocompatibility. The fatigue life was determined by means of ex situ tests under stress control in compression/compression fatigue with a stress ratio Smin/Smax= 0.1 for different values of the maximum load in as-printed scaffolds or after immersion in simulated body fluid. Additionally, in situ synchrotron X-ray microtomography compression tests were carried out in as-printed scaffolds and after immersion in simulated body fluid. The results of the mechanical tests, together with the microstructural observations, provided new insights on the deformation and fracture mechanisms of porous Mg scaffolds under static and cyclic load after immersion in simulated body fluid.
||Biomaterials, Additive Manufacturing,