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Phase Equilibria at 600 °C of the Y-Zn-Zr System

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Abstract

The phase equilibria at 600 °C of the Y-Zn-Zr system were determined via investigating the reaction of Y-Zr alloy with Zn vapor and the equilibrated ternary alloys, by means of the electron probe microanalyses and x-ray diffraction. Two ternary phases, which are denoted as τ1 and τ2, were found at 600 °C. The τ1 phase was deduced to have a triclinic structure. It has a homogeneity range of Y3.6-5.8Zn88.7-89.8Zr4.8-6.6 and is located approximately between Zr5Zn39 and Y2Zn17. The τ2 phase was determined to have a homogeneity range of Y9.0-9.9Zn74.0-75.0Zr15.6-16.6 (in at.%). The solubility of Zr in YZn2 was measured to be up to 10.4 at.% Zr. Thirteen three-phase equilibria were well determined. Six of them involving the τ1 or τ2 were found. The isothermal section at 600 °C was constructed over the entire composition range of the Y-Zn-Zr system.

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Acknowledgments

This work is supported by the National Natural Science Foundation of China (Grant No. 50971135) and the Sino-German Center for Promotion of Science (Grant No. GZ591).

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Authors and Affiliations

  1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, Hunan, People’s Republic of China

    Honghui Xu, Tao Yu, Chong Chen & Tao Zhou

  2. Zhuzhou Cemented Carbide Cutting Tools Ltd., Zhuzhou, 412007, Hunan, People’s Republic of China

    Tao Yu

  3. Thermo-Calc Software AB, Råsundavägen 18, 16967, Solna, Sweden

    Hai-Lin Chen

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  1. Honghui Xu
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  2. Tao Yu
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  3. Hai-Lin Chen
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Correspondence to Honghui Xu.

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Xu, H., Yu, T., Chen, HL. et al. Phase Equilibria at 600 °C of the Y-Zn-Zr System. J. Phase Equilib. Diffus. 38, 589–599 (2017). https://doi.org/10.1007/s11669-017-0556-5

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  • DOI: https://doi.org/10.1007/s11669-017-0556-5

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