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Experimental Investigation and Thermodynamic Assessment of Phase Equilibria in the Hf-Ti-V Ternary System

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Abstract

In this study, two isothermal sections of the Hf-Ti-V ternary system at 1100 and 1300 °C were experimentally investigated by means of back-scattered electron, electron probe microanalysis and x-ray diffraction. The isothermal section at 1100 °C consists of one three-phase region and three two-phase regions, without any ternary compounds. The β(Hf, Ti) phase forms a large continuous solid solution at 1300 °C, even extends to Hf-V side. The solubility of V in β(Hf, Ti) phase is large, while the solubility of V in the α(Hf, Ti) phase is small. A thermodynamic description of the Hf-Ti-V system was carried out based on the experimental data determined in this work. The calculated phase diagrams are in good agreement with the present experimental results.

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Acknowledgments

This work was supported by the National Key R&D Program of China (Grant Nos. 2017YFB0702901, 2016YFB0701401), the National Natural Science Foundation of China (Nos. 51571168, 51471138), the Ministry of Science and Technology of China (Grant No. 2014DFA53040). The supports from the China Aviation Industry Group are also acknowledged.

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Authors and Affiliations

  1. College of Materials and Fujian Provincial Key Laboratory of Materials Genome, Xiamen University, Xiamen, 361005, People’s Republic of China

    X. J. Liu, J. Yao, H. Luo, J. H. Zhu, J. Li, J. B. Zhang, S. Y. Yang & C. P. Wang

  2. Department of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, 518055, People’s Republic of China

    X. J. Liu

  3. Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing, 100095, People’s Republic of China

    Y. W. Kang

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  1. X. J. Liu
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Correspondence to C. P. Wang.

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Liu, X.J., Yao, J., Luo, H. et al. Experimental Investigation and Thermodynamic Assessment of Phase Equilibria in the Hf-Ti-V Ternary System. J. Phase Equilib. Diffus. 39, 290–300 (2018). https://doi.org/10.1007/s11669-018-0628-1

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  • DOI: https://doi.org/10.1007/s11669-018-0628-1

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