About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Algorithm Development in Materials Science and Engineering
|
Presentation Title |
Measuring Individual Grain Boundary Diffusivity Measurements in Polycrystal Molecular Dynamics Simulations |
Author(s) |
David Page, Christian Kurniawan, Oliver K Johnson, David T Fullwood, Eric R. Homer |
On-Site Speaker (Planned) |
David Page |
Abstract Scope |
The diffusion of species at grain boundaries can plan an important role in numerous materials processes. Because each grain boundary can be unique and bicrystals only allow diffusion measurements of a single grain boundary at a time, this complicates the acquisition of data. We develop a method to calculate the full hydrogen diffusivity tensor for each unique grain boundary region between two grains in nickel polycrystals using molecular dynamics simulations. This method allows dozens of general-type grain boundaries to be examined in a single simulation. We examine two different grain sizes and discuss the overall effectiveness of the method. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, |