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Neutron computed tomography of phase separation structures in solidified Cu-Co alloys and investigation of relationship between the structures and melt convection during solidification

庄司 衛太*; 磯谷 祥世*; 鈴木 陸人*; 久保 正樹*; 塚田 隆夫*; 甲斐 哲也   ; 篠原 武尚   ; 松本 吉弘*; 福山 博之*

Shoji, Eita*; Isogai, Shosei*; Suzuki, Rikuto*; Kubo, Masaki*; Tsukada, Takao*; Kai, Tetsuya; Shinohara, Takenao; Matsumoto, Yoshihiro*; Fukuyama, Hiroyuki*

The effect of melt convection on the phase separation structures in undercooled Cu- Co alloys was investigated using the electromagnetic levitation technique, where the melt convection was controlled by applying a static magnetic field. The three-dimensional phase separation structures of the solidified Cu-Co alloys were first observed using neutron computed tomography. A large number of small spherical Co-rich phases were dispersed in the Cu-rich phase matrix when the static magnetic field was relatively small. In contrast, several coalesced Co-rich phases, which were elongated along the direction of the static magnetic field, appeared in the higher strength of static magnetic field.

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パーセンタイル:78.22

分野:Nanoscience & Nanotechnology

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