○Hideki OHARA¹, Masatoshi TAKANO¹, Hiroshi Kobayashi¹, Satoshi ASANO¹ (1. Sumitomo Metal Mining Co., Ltd.)

○Takuto Miyashita¹, Akihiro Kishimoto¹, Yuki Taninouchi¹, Tetsuya Uda¹ (1. Kyoto University)

○Hiroki Takahashi¹, Taiki Yamaguchi¹, Masami Taguchi¹ (1. Akita University)

○Shunya Shimizu¹, Ryota Yabune¹, Hideaki Sasaki¹ (1. Ehime university)

○Masahito Uchikoshi¹, Takatoshi Matsumoto¹ (1. Tohoku University)

○Noriko OBARA¹, Reiko MURAO², Kozo SHINODA¹, Shigeru SUZUKI¹ (1. Tohoku University, 2. NIPPON STEEL)