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Influence of Chromium on the Phase Composition and Specific Features of Hardening of the MnFeCoNiCu High-Entropy Alloy

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A six-component system of CoNiCuCrx high-entropy alloys with different contents of chromium (where x = 0, 0.5, 1.0, 2.0, and 3.0 mole) is obtained by the method of argon-arc melting in a МІFІ-9 study. By the methods of X-ray diffraction analysis, scanning-electron microscopy, and indentation, we investigate the influence of chromium on the crystalline structure, microstructure, and hardness of these alloys in the as-cast state. In their structure, depending on the chromium content, we detect a mixture of the following phase components: two face-centered cubes + a body-centered cube + an intermetallic σ-phase (FCC1 + FCC2 + BCC + σ). It is also established that, as the chromium content increases, we observe the formation of the bcc structure and the σ-phase, which is the predominant factor of hardening of the alloy.

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Authors and Affiliations

  1. Frantsevych Institute for Problems in Materials Science, National Academy of Sciences of Ukraine, Kyiv, Ukraine

    О. M. Myslyvchenko & М. О. Krapivka

  2. “MATERIALS LAB,” LLC, Kyiv, Ukraine

    О. S. Tereshchenko

  3. Research Institute of Solid-State Physics and Chemistry, Uzhhorod National University, Uzhhorod, Ukraine

    М. I. Filep

Authors
  1. О. M. Myslyvchenko
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  2. М. О. Krapivka
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  3. О. S. Tereshchenko
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  4. М. I. Filep
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Correspondence to О. M. Myslyvchenko.

Additional information

Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 56, No. 3, pp. 81–85, May–June, 2020.

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Myslyvchenko, О.M., Krapivka, М.О., Tereshchenko, О.S. et al. Influence of Chromium on the Phase Composition and Specific Features of Hardening of the MnFeCoNiCu High-Entropy Alloy. Mater Sci 56, 375–380 (2020). https://doi.org/10.1007/s11003-020-00440-y

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  • DOI: https://doi.org/10.1007/s11003-020-00440-y

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