Ti-Cr-V-based alloys have been utilized across various domains, including aerospace structural and functional materials and hydrogen storage materials. Investigating the phase relations in the Ti-Cr-V system is significant in supporting the material design for these applications. In the present work, the isothermal sections at 1000, 1100, and 1200 °C for the Ti-Cr-V system were precisely determined through a systematic investigation using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD). The phase region of Cr2Ti was entirely elucidated for the first time. As the temperature decreased from 1200 to 1000 °C, the V solubility range of Cr2Ti increased from 5.3 wt.% to 10.0 wt.%, while the Ti solubility range essentially remained constant at approximately 31.0–33.9 wt.%. In addition, it was suggested that the stable structure of Cr2Ti was C36 at 1200 °C and C15 at 1000 and 1100 °C. The present work will support thermodynamic re-assessment research.

中文翻译：

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1000–1200 °C Ti-Cr-V 体系相平衡的实验研究

Ti-Cr-V基合金已广泛应用于各个领域，包括航空航天结构和功能材料以及储氢材料。研究 Ti-Cr-V 系统中的相关系对于支持这些应用的材料设计具有重要意义。在目前的工作中，通过使用扫描电子显微镜（SEM）、能量色散X射线光谱（EDS）的系统研究，精确确定了Ti-Cr-V体系在1000、1100和1200°C的等温截面。和 X 射线衍射 (XRD)。首次完全阐明了 Cr2Ti 的相区。随着温度从1200℃降低到1000℃，Cr2Ti的V溶解度范围从5.3wt.%增加到10.0wt.%，而Ti溶解度范围基本保持恒定在约31.0-33.9wt.%。此外，有人认为Cr2Ti的稳定结构在1200℃时为C36，在1000和1100℃时为C15。目前的工作将支持热力学重新评估研究。