About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Chemistry and Physics of Interfaces
|
| Presentation Title |
Characterization of twin-twin interactions in magnesium using ML-driven atomistic simulations |
| Author(s) |
Christopher D. Barrett, Ethan Holder, Doyl Dickel |
| On-Site Speaker (Planned) |
Christopher D. Barrett |
| Abstract Scope |
Characterization of twinning in magnesium is a complex and highly active area of research due to the impact of twins on ductility. In this work, we use state-of-the-art atomistic simulations to probe twin-twin interactions to determine how competing twin modes evolve. Double twinning is particularly examined due to its potential to lead to crack formation. Results showed that {1121} twins which are often observed in simulation but not experiments showed more strain-rate dependence than other twin modes and can be eventually consumed by {1012} twins. We also observed that double twinning leads to complex strain localization in which new twins rapidly nucleate in close proximity leading to unsustainable defect densities. The mechanics of these nucleation and growth mechanisms are characterized by interfacial defect theory in a generalized three-dimensional context. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Characterization, Mechanical Properties |