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Meeting

2026 TMS Annual Meeting & Exhibition

Symposium

Late News Poster Session

Presentation Title

C-28: Computational Modelling of Mg Alloy Corrosion at the Microstructural Level

Author(s)

Fatemeh Karamifard, Ted Vaughan, Peter Mchugh

On-Site Speaker (Planned)

Peter Mchugh

Abstract Scope

We have successfully developed a highly efficient pitting corrosion model and applied it to simulate biodegradation of Mg alloys for medical implant applications [Grogan et al. Acta Biomater 2011;7:3523-3533, Quinn et al. J Mech Behav Biomed Mater 2023;138:105637]. The phenomenological and statistically based model has been implemented using Finite Element Analysis and applied to date to homogeneous and isotropic microstructures. Here we introduce a polycrystalline microstructure, where individual grains are represented using a distribution of crystal lattice orientations throughout the microstructure, and where surface corrosion at grain level is influenced by the local crystal lattice orientation. The model is applied to the degradation of Mg alloys with HCP crystal structures, with preferential corrosion on (0001) basal planes, as has been experimentally observed [Wang et al. Corros Sci 2025;255:113151]. The model is used to assess the influence of grain size and crystallographic texture on corrosion behaviour in polycrystalline Mg alloy microstructures.

Proceedings Inclusion?

Undecided

Keywords

Modeling and Simulation, Magnesium, Computational Materials Science & Engineering

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