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Interdiffusion and Atomic Mobility for Face-Centered-Cubic Co-Al Alloys

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Abstract

Interdiffusion in the face-centered-cubic (fcc) Co-Al binary alloys was studied by the diffusion-couple approach in the temperature range of 1173 K to 1573 K (900 °C to 1300 °C). Interdiffusion coefficients of the fcc Co-Al alloys were then evaluated by using the Sauer–Freise method. The effect of magnetic ordering on the Co-Al interdiffusion was observed at 1273 K (1000 °C) by examining the Arrhenius plots. The interdiffusion data were assessed to develop the atomic mobility for the fcc Co-Al alloys, and their validity was tested by simulating the diffusion-couple experiments.

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This work was supported by a Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science. Support from CREST, the Japan Science and Technology Agency, and the Global COE Project is also acknowledged.

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Authors and Affiliations

  1. Computational Alloy Design Group, IMDEA Materials Institute, Madrid, 28040, Spain

    Y.-W. Cui (Staff Researcher)

  2. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, 710072, People’s Republic of China

    B. Tang (Doctoral Candidate)

  3. Department of Materials Science, Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan

    R. Kato (Graduate Student), R. Kainuma & K. Ishida (Professor)

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  1. Y.-W. Cui
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  2. B. Tang
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  3. R. Kato
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  4. R. Kainuma
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  5. K. Ishida
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Correspondence to Y.-W. Cui.

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Manuscript submitted April 11, 2011.

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Cui, YW., Tang, B., Kato, R. et al. Interdiffusion and Atomic Mobility for Face-Centered-Cubic Co-Al Alloys. Metall Mater Trans A 42, 2542–2546 (2011). https://doi.org/10.1007/s11661-011-0758-0

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