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Takayoshi Takeda
The Research Institute for Iron, Steel and Other Metals, Tôhoku University
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Yasuo Yamaguchi
The Research Institute for Iron, Steel and Other Metals, Tôhoku University
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Hiroshi Watanabe
The Research Institute for Iron, Steel and Other Metals, Tôhoku University
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Soichi Tomiyoshi
The Research Institute for Iron, Steel and Other Metals, Tôhoku University
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Hisao Yamamoto
The Research Institute for Iron, Steel and Other Metals, Tôhoku University