Solubility of Tungsten in Nickel-Rich Ni-Cr Alloys at 1000°C

Abstract

For the determination of solubility of tungsten in nickel-rich Ni-Cr alloys at 1 000°C, five specimens of multi-phase Ni-Cr-W alloys with different composition were equilibrated for more than 2000h and the chemical composition of each phase in the specimens was analyzed by means of the electron probe microanalysis. The result was summarized as an isothermal section of the Ni-Cr-W equilibrium diagram, in which a three phase triangle composed of γ, α₂ and σ phase was identified.