[3L06-09] Fusion Reactor Materials 2

[3L06] Effect of nitrogen impurity and alloy composition on mechanical properties of low-activation vanadium alloy

*Kazuki Saito¹, Takuya Nagasaka^1,2, Makoto Kobayashi^1,2, Jingjie Shen², Gaku Yamazaki¹, Valentyn Tsisar³, Takeo Muroga^1,2 (1. SOKENDAI, 2. NIFS, 3. KIT)

Keywords:fusion blanket structural materials, Vanadium alloy, scavenging effect, mechanical property

Low-activation vanadium alloys are the candidate of fusion reactor structural materials. Titanium, one of the alloying elements, forms precipitates with impurity nitrogen and suppresses solid solution hardening and embrittlement. In order to understand the scavenging effect and to optimize the titanium concentration, the present study evaluated the correlation between nitrogen diffusion and/or precipitation behaviors and mechanical properties.