About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
Presentation Title |
Three-Dimensional Discrete Dislocation Dynamics Simulations in Pure Titanium |
Author(s) |
Ruidong Mei, Jaafar El-Awady |
On-Site Speaker (Planned) |
Ruidong Mei |
Abstract Scope |
Despite numerous experimental studies on HCP Ti, the understanding of microstructural development during plastic deformation remains incomplete. In this study, we introduce a comprehensive framework for investigating plasticity in pure Ti using three-dimensional discrete dislocation dynamics (DDD) simulations. We modified the open-source software ParaDis by incorporating several critical mechanisms, including the dissociation of <a> screw dislocations on the basal plane, as well as the locking and unlocking mechanism between prismatic and pyramidal I plane. To ensure a more physically accurate simulation, we also integrated a critical resolved shear stress (CRSS) module and an annihilation mechanism into the platform. Our work provides a self-consistent simulation tool for predicting dislocation dynamics in pure Ti, and for future studies on more complex microstructural behaviors, such as the dislocation motions at the interfaces of the alpha and beta phases in Ti. |
Proceedings Inclusion? |
Planned: |
Keywords |
Titanium, Computational Materials Science & Engineering, |