| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior of Nuclear Reactor Materials and Components IV
|
| Presentation Title |
On the irradiation-induced creep and plasticity of Zircaloy with a simplified cluster dynamics model |
| Author(s) |
Muh-Jang Chen, Nicholas Militello, Sophie Blondel, Andrea Rovinelli, Laurent Capolungo, Brian Wirth |
| On-Site Speaker (Planned) |
Muh-Jang Chen |
| Abstract Scope |
Cluster dynamics (CD) is a well-established technique to predict how irradiation affects the material plasticity and creep with the growth of dislocation loops for cladding alloy such as Zircaloy. A recently developed and spatially resolved CD model, Xolotl, can predict the evolution of the irradiation-induced defects such as point defects, clusters and dislocation loops. Based on Xolotl, we developed a surrogate CD model, embedded into a crystal plasticity framework, to predict the irradiation creep and plasticity in polycrystal Zircaloy. Particularly, the CD model provides the generation and evolution of the irradiation-induced defects, that are obstacles for dislocations. The surrogate CD model utilizes a set of modified equations that allows both inter- and intra-category reactions by tracking the effective size and the concentration of each group. The coupled crystal plasticity CD model was applied to predict the irradiation creep, swelling and mechanical response of Zircaloy-4, subjected to realistic loading conditions. |
| Proceedings Inclusion? |
Planned: |