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Experimental Investigation of Phase Equilibria in the Nb-V-Hf Ternary System

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Abstract

In this study, the phase equilibria of the Nb-V-Hf ternary system at 1300, 1100 and 1000 °C were experimentally investigated by means of back-scattered electron imaging, electron probe microanalysis, and x-ray diffraction. The results show that one ternary Laves compound with a hexagonal C14 structure is found in the isothermal sections that were studied. The bcc phase forms a large continuous solid solution, and no phase separation occurs at 1000 °C as had been claimed in the literature. As the temperature rises from 1000 to 1300 °C, the bcc structure can be observed in the Hf-V side, and the phase region of C15 reduces.

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Acknowledgment

This work was supported by the National Natural Science Foundation of China (Grant No. 51831007) and the National Natural Science Foundation of China (Grant No. 52001098).

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Authors and Affiliations

  1. Xiamen University, Xiamen, Fujian, People’s Republic of China

    J. B. Zhang, X. Yu, X. Wu, Y. Q. Zhang, S. B. Pan, S. Y. Yang, C. P. Wang & X. J. Liu

  2. Harbin Institute of Technology, Shenzhen, Guangdong, People’s Republic of China

    X. J. Liu

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  1. J. B. Zhang
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Zhang, J.B., Yu, X., Wu, X. et al. Experimental Investigation of Phase Equilibria in the Nb-V-Hf Ternary System. J. Phase Equilib. Diffus. 44, 669–678 (2023). https://doi.org/10.1007/s11669-023-01071-x

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  • DOI: https://doi.org/10.1007/s11669-023-01071-x

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