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Time evolution of the structural short-range order during the mechanical milling of Fe–Co–Cu nanocrystalline alloys

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Abstract

The local order around Fe, Co, and Cu atoms was investigated by extended x-ray absorption fine structure spectroscopy in Fe–Co–Cu nanocrystalline alloys prepared by mechanical alloying. In order to study the time evolution of the alloying process, Fe30Co20Cu50 samples were studied after several processing times. The analysis of the data shows that, in a first step, a binary Co–Cu alloy is formed, but iron remains separate in the form of nanocrystals with a high defect concentration. Afterwards, in a second step, the final ternary Fe–Co–Cu alloy with the face-centered-cubic structure is obtained.

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Authors and Affiliations

  1. Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, 28049, Cantoblanco, Madrid, Spain

    N. Gay-Sanz, C. Prieto, A. Muñoz-Martín & A. de Andrés

  2. Instituto de Magnetismo Aplicado, Universidad Complutense de Madrid—Renfe and Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Cientificas, P.O. Box 155, 28230, Las Rozas, Spain

    M. Vázquez

  3. Department of Physics, Chungbuk National University, 360-763, Cheongju, Korea

    Seong-Cho Yu

Authors
  1. N. Gay-Sanz
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  2. C. Prieto
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  3. A. Muñoz-Martín
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  4. A. de Andrés
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  5. M. Vázquez
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  6. Seong-Cho Yu
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Gay-Sanz, N., Prieto, C., Muñoz-Martín, A. et al. Time evolution of the structural short-range order during the mechanical milling of Fe–Co–Cu nanocrystalline alloys. Journal of Materials Research 14, 3882–3888 (1999). https://doi.org/10.1557/JMR.1999.0525

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  • DOI: https://doi.org/10.1557/JMR.1999.0525

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