About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Algorithm Development in Materials Science and Engineering
|
Presentation Title |
L-8: Methods to Simulate Grain Boundary Diffusion in Bicrystals and Polycrystals |
Author(s) |
David E. Page, Katie Varela, Oliver K Johnson, David T Fullwood, Eric R Homer |
On-Site Speaker (Planned) |
David E. Page |
Abstract Scope |
Grain boundaries have diffusive properties that can vary significantly from the bulk and from other grain boundaries. We detail methods to calculate unique diffusivity values for both bulk and grain boundary regions in bicrystal molecular dynamics simulations. However, simulating grain boundary diffusivity one boundary at a time is a slow process. As a result, we also present methods that extend the bicrystal techniques to three dimensions where one can calculate both bicrystal and grain boundary diffusivity values in full polycrystalline simulations and obtain unique diffusivity values for each grain boundary. We report methods for validation of the diffusivity measurements in each region and compare the results with a published model for grain boundary dependent diffusion. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |