| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
Martensitic Transformation-mediated Twin Nucleation in Hexagonal Close Packed Metals |
| Author(s) |
Lei Cao, 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 hexagonal close packed crystal structure, 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 hexagonal close packed magnesium and titanium. We found the nucleation of various deformation twins through reversible martensitic phase transformations, via evanescent intermediate phases. Our findings are crucial for completing the twinning theories in hexagonal close packed metals. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Phase Transformations, Modeling and Simulation |