| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior of Nuclear Reactor Materials and Components IV
|
| Presentation Title |
Methodology for crack tolerance assessment in inhomogeneously irradiation embrittled EUROFER structures |
| Author(s) |
Mathias Jetter, Jarir Aktaa |
| On-Site Speaker (Planned) |
Mathias Jetter |
| Abstract Scope |
Neutron irradiation significantly affects the mechanical properties of EUROFER steel causing, among other, hardening and embrittlement. Fracture Toughness reduces and shows a DBTT shift towards higher temperatures.
Following the determination of the material conditions, suitable methods for the representation of fracture initiation and propagation are to be selected from the finite element (FE) simulation toolbox.
The objective is to investigate how the crack propagation changes depending on the altering material behaviour in inhomogeneously irradiation embrittled structures, whether it maintains its direction, is deflected or the crack tip blunts and stops. Therefore, multi-dimensional crack simulations and parameter studies are carried out, which provide information on whether or not a failure occurs under the given loads.
Fracture mechanics experiments with inhomogeneously irradiated specimens cannot be carried out due to limited time and availability.
Therefore, the FE model will be validated on other surrogate materials that show graded transition from brittle to ductile. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Mechanical Properties, Modeling and Simulation |