In the present work, the liquidus projection of the Al–Nb–V system is proposed for the first time. It corresponds to important data for the design of innovative low-density Al-containing refractory high-entropy alloys. Experimental investigation was carried out via microstructural characterization of fifty-six alloys in as-cast state using scanning electron microscopy (SEM), electron dispersive X-ray spectroscopy (EDS) and X-ray diffractometry (XRD). Results showed no signs of ternary phases and only primary precipitation fields from binary phases were observed. The BCC primary precipitation field is dominant, while V₅Al₈ primary precipitation field is restricted to a small region close to Al–V binary. Three class II (U_I, U_II and U_III) ternary invariant reactions were proposed.

在目前的工作中，首次提出了Al–Nb–V系统的液相线预测。它对应于设计创新的低密度含铝耐火高熵合金的重要数据。使用扫描电子显微镜（SEM），电子色散X射线能谱（EDS）和X射线衍射仪（XRD）通过对56种处于铸态的合金的微观结构表征进行了实验研究。结果显示没有三元相的迹象，仅观察到来自二元相的初级降水场。BCC初级降水场占主导地位，而V ₅ Al ₈初级降水场被限制在一个接近Al–V二元的小区域。三类II（U _I，U _II和U_III）提出了三元不变反应。