Phase Equilibria in the Ni-Al-Bi Ternary System

The phase equilibria in the Ni-Al-Bi ternary system at 800 and 1000 °C were experimentally determined by x-ray diffraction and electron probe microanalysis. The results show that: Bi is almost insoluble in any Ni-Al compounds and (Ni) phase. There are five and four three-phase regions existing in the isothermal section at 800 and 1000 °C, respectively. The Ni-Al binary compounds are all in equilibrium with the liquid phase in these two isothermal sections. No ternary compound was found at 800 and 1000 °C.