Comprehensive mapping of tracer diffusivities across composition space in ternary Ni–Al–Ti and quinary Ni–Co–Fe–Al–Ti high-entropy alloy using diffusion couple experiments and physics-informed neural network inversion

Key Points

• Tracer diffusivities were mapped across varying compositions in high-entropy alloys, revealing significant patterns.
• The study found marked differences in diffusivities between ternary Ni–Al–Ti and quinary Ni–Co–Fe–Al–Ti alloys.
• Analyses utilized diffusion couple experiments alongside neural network inversion for accurate data gathering.
• Understanding these diffusivities supports future research on alloy performance in applications, with potential advancements in material science.