About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Local Chemical Ordering and Its Impact on Mechanical Behaviors, Radiation Damage, and Corrosion
|
| Presentation Title |
Solute Cluster Strengthening in Mg-Ca-Zn Alloys |
| Author(s) |
Yuanren Liu, Jiaqi Dong, Kelvin Xie, Yong-Jie Hu |
| On-Site Speaker (Planned) |
Yong-Jie Hu |
| Abstract Scope |
While solute clusters have been recognized to lead to significant strengthening in many Al and Mg alloys, the underlying mechanism of solute cluster strengthening remains elusive and cannot be fully explained by extrapolating the theories of solid-solution and/or precipitate strengthening. In this work, we use Mg-Ca-Zn alloys as a model system to develop a multiscale simulation framework that elucidates the origin and impact of solute clustering on mechanical strength. The chemistry, structural ordering, and formation kinetics of solute clusters in a Mg-Zn binary and a Mg-Ca-Zn ternary alloy are predicted via kinetic Monte Carlo simulations. These cluster configurations are then used as inputs to molecular statics and dynamics simulations to assess their pinning effects on basal dislocations in Mg. This work provides fundamental insights into which types of solute clusters are most effective at enhancing mechanical properties and identifies the key structural and chemical features that govern their effectiveness. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Magnesium, Mechanical Properties |