About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Transmutation Effects in Fusion Reactor Materials: Critical Challenges & Path Forward
|
Presentation Title |
Helium Effects on Mechanical Properties of (RA)FM Steels |
Author(s) |
Jean Henry, Yong Dai, Ermile Gaganidze |
On-Site Speaker (Planned) |
Jean Henry |
Abstract Scope |
The high quantities of gaseous transmutation products, in particular Helium, generated in the structural steels of in-vessel components of future fusion reactors have long been a subject of concern. The potentially deleterious effects of the accumulated Helium, acting synergistically with displacement damage, on bulk mechanical properties have been investigated using fission neutron irradiations of RAFM steels doped with 10B, 58Ni or 54Fe isotopes, irradiation in spallation conditions and high energy He implantation using cyclotrons. Based on data obtained using these techniques, this presentation aims to give an overview of He-induced effects on the mechanical behaviour of FM steels, with emphasis on tensile and impact properties. While the simulation experiments have generated useful data and have advanced our understanding of He-induced effects, each technique has specific drawbacks. Therefore, a high intensity 14 MeV neutron source, such as the planned IFMIF-DONES facility, is urgently needed! |
Proceedings Inclusion? |
Planned: |
Keywords |
Iron and Steel, Mechanical Properties, Nuclear Materials |