About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
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Environmental Degradation of Additively Manufactured Alloys
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Presentation Title |
Simulation of the Effect of Corrosion on the Mechanical Properties of Porous Mg Scaffolds Fabricated by Power Bed Laser Fusion for Biomedical Applications |
Author(s) |
M. Marvi-Mashhadi, Muzi Li, Wahaaj Ali, Carlos González, Javier Llorca |
On-Site Speaker (Planned) |
Javier Llorca |
Abstract Scope |
Porous scaffolds of WE43 Mg alloy for biomedical applications were manufactured by power bed laser fusion. The effect of corrosion in a simulated body fluid on the mechanical properties was ascertained by means on compression tests and the degradation was analyzed by means of X-ray computed tomography. The mechanical behavior was analyzed by means of the finite element method. Corrosion of Mg as a function of time was included through a phenomenological diffusion-based model that can take into account both uniform and pitting corrosion. The model parameters in terms of the strength of Mg and the corrosion rate were determined by comparison with experimental data in Mg scaffolds and they were used to analyze the effect of porosity and strut dimensions on the mechanical behavior of the scaffolds as a function of the corrosion time. This information was used to establish the optimum scaffolds dimensions for bone healing applications. |
Proceedings Inclusion? |
Planned: |