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Structural Phase Transformations in Zr50Co25Ni25 Alloy

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Powder Metallurgy and Metal Ceramics Aims and scope

High-temperature X-ray diffraction is applied to study for the first time the structural phase transformations in the Zr50Co25Ni25 alloy at 30–800°C. It is shown that this alloy contains one phase at room temperature, with an orthorhombic crystal structure of CrB type. When temperature increases to 400°C, this phase transforms into a tetragonal phase of AuCu type. A phase with a cubic crystal structure of CsCl type and a monoclinic one of TiNi type show up at 800°C. The TiNitype phase remains up to room temperature when the sample is cooled down.

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Notes

  1. ∗ The Zr50Co25Ni25 alloy was tested by three-point bending at the Kurdyumov Institute for Metal Physics, National Academy of Sciences of Ukraine, by researcher Yu. V. Kudryavtsev.

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Authors and Affiliations

  1. Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kiev, Ukraine

    O. L. Semenova & O. S. Fomichev

  2. University of Montpellier, Montpellier, France

    J.-C. Tedenac

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  1. O. L. Semenova
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  2. J.-C. Tedenac
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  3. O. S. Fomichev
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Correspondence to O. L. Semenova.

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Translated from Poroshkovaya Metallurgiya, Vol. 55, Nos. 5–6 (509), pp. 111–119, 2016.

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Semenova, O.L., Tedenac, JC. & Fomichev, O.S. Structural Phase Transformations in Zr50Co25Ni25 Alloy. Powder Metall Met Ceram 55, 339–346 (2016). https://doi.org/10.1007/s11106-016-9811-2

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  • DOI: https://doi.org/10.1007/s11106-016-9811-2

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