| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
Coupled Neutron Diffraction and Modeling Study of the Formation and Recovery of Dislocations in Elemental Tantalum and Ferritic HT-9 Steel |
| Author(s) |
Donald W. Brown, Reeju Pokharel, Aaron Kohnert, Laurent Capolungo, Levente Balogh, Bjorn Clausen, Tarik Saleh |
| On-Site Speaker (Planned) |
Donald W. Brown |
| Abstract Scope |
Microstructure-aware models are necessary to extrapolate mechanical properties of materials to environmental conditions which are not easily reproduced in the laboratory, e.g. nuclear reactor environments. Elemental tantalum provides a relatively simple BCC system in which to develop a microstructural understanding of deformation processes which will then be applied to a much more complicated BCC steel alloy, HT-9. The evolution of texture, lattice strain and dislocation density in each material was monitored through deformation and subsequent annealing with in-situ neutron diffraction measurements. The observed data will be used to develop both polycrystalline plasticity models and Discrete Dislocation Dynamics (DDD) models. The observed and calculated evolution of the microstructural features will be critically compared. |
| Proceedings Inclusion? |
Planned: |