Interactions of the components in the Al–V–Nd system at 773 K

The phase equilibria of the Al–V–Nd ternary system at 773 K were investigated for the first time, mainly by means of X-ray powder diffraction (XRD), scanning electron microscope (SEM) and energy dispersive analysis (EDX). The existence of 11 binary compounds, i.e. Al21V2, Al45V7, Al23V4, Al3V, Al8V5, Al11Nd3, Al3Nd, Al2Nd, AlNd, AlNd2 and AlNd3 were confirmed. At 773 K, one ternary-phase Nd6V4Al43 was confirmed and it was indicated that this compound has a hexagonal structure with space group P63/mcm (no. 193) and the lattice parameters of a = 1.1028 nm, c = 1.7931 nm, c/a = 1.626 and V = 1.893 nm3. The isothermal section of the Al–V–Nd ternary system consists of 15 single-phase regions, 28 binary-phase regions and 14 ternary-phase regions. The solid solubility of Al in V is up to 39 at.% Al at 773 K.