| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Atomistic Simulations Linked to Experiments to Understand Mechanical Behavior: A MPMD Symposium in Honor of Professor Diana Farkas
|
| Presentation Title |
Transformation-Assisted Twin Nucleation in Metals |
| Author(s) |
Lei Cao, Mehrab Lotfpour, Amir Hassan Zahiri, Jamie Ombogo |
| On-Site Speaker (Planned) |
Lei Cao |
| Abstract Scope |
Though twinning plays an equally vital role to that of dislocation slips in accommodating deformation in the many metals and alloys, its atomic-level nucleation mechanism has long been under debate. Accordingly, there is a critical need to rigorously understand the atomic mechanism of twin nucleation. We performed large-scale molecular dynamics simulations to study the deformation process in titanium. We found the nucleation of various deformation twins through reversible martensitic phase transformations, via evanescent intermediate phases. Furthermore, the findings are applied to rationalize the role of mechanical loading and anomalous temperature dependence of the activation of different twinning modes in Ti and Zr. |
| Proceedings Inclusion? |
Planned: |