Effects of Aging and Co Addition on Martensitic and Magnetic Transitions in Ni-Al-Fe β-based Shape Memory Alloys

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概要

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• Effects of low temperature aging and the addition of Co on the martensitic and magnetic transitions in the Ni–Al–Fe β (B2-type structure) alloy system were investigated using differential scanning calorimetry, transmission electron microscopy and vibrating sample magnetometry. The martensitic transition temperatures of a Ni57Al25Fe18 specimen homogenized at 1 473 K for 1 h were decreased by aging after homogenization, the maximum decrease by aging being observed at 573 K. On the other hand, the substitution of Co or Fe for Ni induced a decrease of the martensitic transition temperatures and an increase of the Curie temperature, while the substitution of Co for Fe resulted in an increase of the martensitic transition and Curie temperatures. Co was thus shown to be an effective element by which both the martensitic and magnetic transition temperatures can be controlled.

• 社団法人 日本鉄鋼協会の論文
• 2006-09-15

著者

• Oikawa Katsunari

  Department of Materials Science, Graduate School of Engineering, Tohoku University

• Ishida Kiyohito

  Department of Materials Science, Graduate School of Engineering, Tohoku University

• 石田 清仁

  東北大院工

• 石田 清仁

  東北大学未来科学技術共同研究センター

• Sutou Yuji

  Department of Materials Science, Graduate School of Engineering, Tohoku University

• Tanaka Yuuki

  Department Of Materials Science Graduate School Of Engineering Tohoku University

• Kainuma R

  Institute Of Multidisciplinary Research For Advanced Materials Tohoku University

• Sutou Yuji

  Crest-jst Dept. Mater Sci. Tohoku University

• Sutou Yuji

  Tohoku University Biomedical Engineering Research Organization Tubero Aobayama Material Science Bran

• Ohmori Toshihiro

  Department Of Materials Science Graduate School Of Engineering Tohoku University

• Omori Toshihiro

  Department Of Materials Science Graduate School Of Engineering Tohoku University

• Ishida K

  Department Of Materials Science Graduate School Of Engineering Tohoku University

• OMORI Toshihiro

  Tohoku University Biomedical Engineering Research Organization

• LUO Fenghua

  Powder Metallurgy Research Institute, Central South University

• KAINUMA Ryosuke

  Department of Materials Science, Graduate School of Engineering, Tohoku University

• Kainuma Ryosuke

  Department Of Materials Science Graduate School Of Engineering Tohoku University

• Kainuma Ryosuke

  Institute For Multidisciplinary Research For Advanced Materials Tohoku University

• Ishida Kiyohito

  Department Of Materials Science Faculty Of Engineering Tohoku University

• Ota Takuya

  Department Of Materials Science Graduate School Of Engineering Tohoku University

• Luo Fenghua

  Powder Metallurgy Research Institute Central South University

• Oikawa K

  Department Of Materials Science Graduate School Of Engineering Tohoku University

• Tanaka Yoshinori

  Department Of Materials Science Graduate School Of Engineering Tohoku University

• 石田 清仁

  東北大 工

• Oikawa Katsunari

  Department Of Materials Science Tohoku University

• Ishida Kiyohito

  Department of Material Science, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan

• Oikawa Katsunari

  Department of Material Science, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan

• TANAKA Yuuki

  Department of Computer Science, Faculty of Engineering, Gunma University

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