About this Abstract |
| Meeting |
Materials in Nuclear Energy Systems (MiNES) 2025
|
| Symposium
|
Materials in Nuclear Energy Systems (MiNES) 2025
|
| Presentation Title |
Kinetics of Dislocation Recovery in Irradiated vs. Deformed Materials |
| Author(s) |
Donald W. Brown, Laurent Capolungo, Dale Carver, Bjorn Clausen, Benjamin Eftink, aaron kohnert, Daniel Savage |
| On-Site Speaker (Planned) |
Donald W. Brown |
| Abstract Scope |
Microstructure-aware models are necessary to predict mechanical properties of materials in environmental conditions such as those observed in nuclear reactors. Dislocations, whether formed through deformation or irradiation, play a controlling role in the mechanical properties of metals by increasing the flow strength and decreasing the strain to failure. Thus, it is important to develop physics-based models of the formation and recovery of dislocations under these distinct conditions. Elemental tantalum provides a relatively simple BCC system in which to develop a microstructural understanding of deformation and recovery processes which can then be applied to much more complicated and more relevant BCC steel alloys. Deformed and Irradiated samples have been studied to probe the distinct recovery kinetics of the dislocations. Transmission Electron Microscopy (TEM) provides details about the dislocation geometry and population while in-situ neutron diffraction experiments probe the distinct recovery kinetics. The results are used to develop physics-based models that can be used to predict strength evolution under relevant environmental conditions. |
| Proceedings Inclusion? |
Undecided |