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

IF 1.5 4区材料科学 Q4 CHEMISTRY, PHYSICAL

Journal of Phase Equilibria and Diffusion Pub Date : 2023-12-03 DOI:10.1007/s11669-023-01071-x

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

引用次数: 0

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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铌-钒-铪三元体系相平衡的实验研究

本研究通过背散射电子成像、电子探针显微分析和 X 射线衍射等方法，对 1300、1100 和 1000 ℃ 下 Nb-V-Hf 三元体系的相平衡进行了实验研究。结果表明，在所研究的等温截面中发现了一种具有六方 C14 结构的三元拉维斯化合物。bcc 相形成了一个大的连续固溶体，在 1000 °C 时没有发生文献中所说的相分离现象。当温度从 1000 ℃ 上升到 1300 ℃ 时，在 Hf-V 侧可以观察到 bcc 结构，C15 的相区缩小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Phase Equilibria and Diffusion 工程技术-材料科学：综合

CiteScore

2.50

自引率

7.10%

发文量

审稿时长

1 months

期刊介绍： The most trusted journal for phase equilibria and thermodynamic research, ASM International''s Journal of Phase Equilibria and Diffusion features critical phase diagram evaluations on scientifically and industrially important alloy systems, authored by international experts. The Journal of Phase Equilibria and Diffusion is critically reviewed and contains basic and applied research results, a survey of current literature and other pertinent articles. The journal covers the significance of diagrams as well as new research techniques, equipment, data evaluation, nomenclature, presentation and other aspects of phase diagram preparation and use. Content includes information on phenomena such as kinetic control of equilibrium, coherency effects, impurity effects, and thermodynamic and crystallographic characteristics. The journal updates systems previously published in the Bulletin of Alloy Phase Diagrams as new data are discovered.