| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
The role of mechanical loading in bcc-hcp phase transition tension-compression asymmetry and twin formation |
| Author(s) |
Mehrab Lotfpour, Lei Cao, Amir Hassan Zahiri, Jamie Ombogo |
| On-Site Speaker (Planned) |
Mehrab Lotfpour |
| Abstract Scope |
In this study, we employ atomistic simulations and theoretical calculations to examine the effect of mechanical loading on martensitic bcc-hcp phase transformations in body-centered cubic (bcc) materials. These transformations typically produce a rich martensite microstructure with internal twins. Our MD simulation results, calculations of deformation gradients, and transformation strains indicate that {1011} and {1012} twins are found as transformation twins and favored by opposite loading directions. Additionally, we observe that the {1121} and {1122} twins are inherited from the initial {112} twin in the bcc phase transforms after the phase transformation. Notably, the calculation completely agrees with our MD simulations, revealing the critical role of mechanical loading in the activation of the specific transformation twinning mode. |
| Proceedings Inclusion? |
Planned: |