About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Chemistry and Physics of Interfaces
|
Presentation Title |
Insight into Cobalt Segregation in Aluminum Grain Boundaries Spanning the 5D Space |
Author(s) |
Ethan R. Cluff, Lydia Harris Serafin, Gus L. W. Hart, Eric R. Homer |
On-Site Speaker (Planned) |
Ethan R. Cluff |
Abstract Scope |
Solute segregation to grain boundaries (GBs) can have a significant effect on an alloy’s properties and behavior. For example, segregation influences GB embrittlement, corrosion resistance, and stabilization of nanograined structures. Previous studies have explored segregation in a limited subset of the 5D GB space. This study expands on those works by analyzing segregation across the entire space. Findings were validated by comparing individual GBs with other datasets of bicrystal simulations and by comparing the distribution of segregation energies to those obtained from polycrystalline simulations. Analysis of the segregation energy distributions that span the 5D space show a negative correlation between GB energy and mean segregation energy. Some groups of GBs, such as the 111 symmetric twist GBs, display notable deviations from the general trends. A GB solute concentration calculation based on the distribution of segregation energies shows the trends in the 5D space and as a function of temperature. |
Proceedings Inclusion? |
Planned: |
Keywords |
Thin Films and Interfaces, Computational Materials Science & Engineering, Modeling and Simulation |