| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals 2024
|
| Presentation Title |
Thermal Stability of Rolled Tungsten Plates at Temperatures between 1100 °C and 1400 °C |
| Author(s) |
Wolfgang Pantleon |
| On-Site Speaker (Planned) |
Wolfgang Pantleon |
| Abstract Scope |
Plasma-facing components of future fusion reactors will have tungsten-based materials as armor. Application of rolled tungsten requires its deformation-induced microstructure remaining stable during operation. Restoration processes as recovery, recrystallization and grain growth occurring at high operation temperatures will ultimately embrittle ductile tungsten achieved by rolling. Three series of pure rolled tungsten plates are investigated: uni-directional vs. cross-rolling (from A.L.M.T.), different thickness reduction (50 % to 90 %, from AT&M) or thin plates of different final thicknesses between 0.2 mm and 2 mm (from Plansee SE). Their thermal stability is characterized by long-term annealing at temperatures just above the expected diverter operation temperature. Microstructural investigations by electron backscatter diffraction reveal the restoration mechanisms occurring which in turn allows to quantify the proper restoration kinetics from the hardness evolution at different temperatures. Extrapolation allows life time prediction for the plates before half recrystallization and qualification of their potential use in fusion reactors. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Characterization, Nuclear Materials |