[P] P168~P180

[P172] Effect of lattice defects on hydrogenation kinetics in HfNbTiZr medium entropy alloy

*Tatsuya UEDA¹, Shuhei Yoshida², Dangwal Shivam³, Kazuhiro Fukami², Karel Saksl⁴, Kaveh Edalati³, Nobihiro Tsuji² (1. Kyoto University, 2. Kyoto University, 3. I2CNER, Kyushu University, 4. Technical University of Košice)

Keywords:水素吸蔵合金、結晶粒微細化、巨大ひずみ加工、HPT、Medium Entropy Alloy

大きな格子ひずみを有する多元系BCC単相固溶体合金のHfNbTiZr Medium Entropy Alloy(MEA)について、結晶粒径を幅広く制御した試料の水素吸蔵特性を調査し、種々の格子欠陥が水素吸蔵特性に与える影響を明らかにする