| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Dynamic Behavior of Materials X
|
| Presentation Title |
D-30: Modeling the Evolution of Precipitates Assisted by Pipe Diffusion of Dislocations |
| Author(s) |
Jing Luo, Yejun Gu, Jaafar El-Awady |
| On-Site Speaker (Planned) |
Jing Luo |
| Abstract Scope |
Formation of precipitates in alloys during dynamic plastic deformation can serve as a potentially efficient strengthening method. Pipe diffusion of dislocations, i.e., dislocation acting as a fast path for atoms in connected precipitates, is a possibly important mechanism for precipitation. However, systematic and quantitative analysis for the evolution of precipitates assisted by pipe diffusion are missing. In this research, we develop a mathematical model for the formation and growth of precipitates through pipe diffusion. Comparison between the simulation results with experiments shows great agreement. We systematically analyze the effect of physical conditions on the evolution of precipitates, including the curvature and length of dislocations, the topology of dislocation networks, the size of precipitates, and the diffusivity of pipe diffusion and bulk diffusion. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Mechanical Properties, Computational Materials Science & Engineering |