Experimental determination and thermodynamic modeling of the Ni–Re binary system

The phase diagram of the Ni–Re binary system has been partially reinvestigated by chemical, structural and thermal characterization of the arc melted alloys. The experimental results obtained during the present investigation were combined with the literature data and a new phase diagram of the Ni–Re binary system is proposed. In comparison with the Ni–Re phase diagram proposed by Nash et al. in 1985 [1], significant differences in the homogeneity domains, freezing ranges and peritectic reaction temperature were evidenced. On the other hand, thermodynamic modeling of the studied system by using the new experimental information has also been carried out with the help of the CALPHAD method. The calculated Ni–Re phase diagram showed a good agreement with the selected experimental information. - Graphical abstract: Ni–Re phase diagram according to the present study. Highlights: ► Re-investigation of the Ni–Re phase diagram. ► Extended phase field of the hcp phase. ► Different freezing ranges and peritectic reaction temperature. ► Thermodynamic modeling of the studied system by using the CALPHAD method.