Revisiting the influence of Cr and Ti on the γ'-Ni₃Al phase dissolution and precipitation kinetics: A combined study using diffusion couples, CALPHAD, and DFT

Key Points

• Dissolution and precipitation kinetics of the gamma-prime phase are influenced by chromium and titanium content, suggesting compositional significance.
• Key evidence shows Ti addition leads to enhanced stability, significantly impacting dissolution rates in specific nickel aluminum alloys.
• Analysis using diffusion couples and CALPHAD data provided insights into phase behavior under varying temperature and composition conditions.
• Findings support the need for tailored alloy compositions to optimize performance in high-temperature applications.