Modeling of radiation-induced embrittlement of fusion materials

Suzudo, Tomoaki

no journal, , 

Plasma-facing materials used in future nuclear fusion reactors are exposed to high heat and high dose of radiation, and it is necessary to accurately predict the degradation of the materials. Currently, it is almost impossible to experimentally mimic the fusion reactor environment, and computational methodologies are useful for the study of mechanical property changes under such an environment. We recently obtained some new knowledge on how rhenium and osmium, which are produced from tungsten the prime candidate of the plasma-facing materials, influence the material properties under neutron irradiation. In addition, we also conducted modeling studies on how phase separation of iron-chromium alloys, a model alloy of blanket materials, cause hardening. In the current presentation, these two topics are focused.