|About this Abstract
|2020 TMS Annual Meeting & Exhibition
|Coatings and Surface Engineering for Environmental Protection II
|Phase-Field Modeling of Microstructural Effects on the Corrosion of Mg Alloys
|David Montiel, Stephen DeWitt, Alexander Chadwick, Katsuyo Thornton
|On-Site Speaker (Planned)
Understanding how alloy composition and thermal history determine the corrosion behavior is crucial to designing alloys with lower corrosion rates. We employ the phase-field and smoothed boundary methods to investigate the effect of microstructure on the corrosion behavior of Mg alloys. Starting from a microstructure representative of an alloy surface, we simulate the corrosion of the alloy when exposed to an electrolyte. By defining separate local corrosion reaction kinetics for each phase, we are able to examine how the exposed fractions of different precipitates affect the overall corrosion rate. Additionally, we study how the microstructural evolution is affected due to variations in reaction kinetics from the local depletion of solute near precipitates.
|Planned: Supplemental Proceedings volume