About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Kinetics and Mechanisms Under External Forcing-Driven Conditions
|
| Presentation Title |
Non-equilibrium Thermodynamics of Dislocations at Large Deformation as a Model Driven System |
| Author(s) |
Anter A. El-Azab |
| On-Site Speaker (Planned) |
Anter A. El-Azab |
| Abstract Scope |
One of the fundamental problems of plasticity that is still unsolved based on first principles is the collective dynamics of dislocations. Even in the case of a pure crystalline metal, a theory of this problem requires integration of concepts of kinetic theory-like (with non-easy statistical closures), non-linear continuum mechanics concepts, and the principles of non-equilibrium thermodynamics. The body of literature handling these topics is called continuum dislocation dynamics. We have made a lot of progress in the area, including a recent extension of continuum dislocation dynamics to finite deformation. In this presentation we explain the theoretical underpinning of the finite deformation theory, including the application of the second law of thermodynamics to reveal interesting coupling of dislocation dynamics and plasticity, point defect generation and evolution, and thermal fields. Time permitting, extension to alloys and irradiated metals will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Mechanical Properties, Nuclear Materials |