Effect of Alloying on the Phase composition of Nickel-Based Superalloys

Abstract

Theoretical modeling of thermodynamic processes of phase separation was carried out, as well as a practical study of the structure and distribution of chemical elements. Based on an integrated approach for the single-crystal system Ni-Al-Re-Ru-Cr- Co-W-Ta, new regression models were obtained that make it possible to predict the chemical composition of phases based on the chemical composition of the alloy. A comparative assessment of the calculation results obtained using regression models and experimental data obtained by X-ray spectroscopy was carried out. The experimental results obtained are as close as possible to the calculated data.