About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Dislocation Mechanisms in Titanium: Insights from Three-Dimensional Discrete Dislocation Dynamics Simulations |
| Author(s) |
Ruidong Mei, Jaafar El-Awady |
| On-Site Speaker (Planned) |
Ruidong Mei |
| Abstract Scope |
The plastic deformation of α-phase titanium (Ti) is governed by the complex interplay of dislocation activities within its hexagonal close-packed (HCP) crystal structure. While experimental studies have provided valuable insights, a comprehensive understanding of the underlying microstructural mechanisms remains elusive. In this study, we employ large-scale three-dimensional discrete dislocation dynamics (DDD) simulations to investigate orientation-dependent slip activity in single α-laths of Ti. Our simulations show the preferential activation of prism ⟨a⟩ slip and yield flow stresses in close agreement with experimental data. The activation of basal and pyramidal ⟨a⟩ slip were also observed and critically analyzed to uncover the origins and implications of the activation of slip on these systems. By directly linking dislocation behavior to evolving microstructure, this work provides a predictive, physics-based framework for modeling plasticity in α-Ti, advancing our ability to interpret and engineer its mechanical performance across scales. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Modeling and Simulation, Computational Materials Science & Engineering |