Microstructural stability in multi-alloy systems: Nanostructured two-phase, dual alloy multilayers

Effects of temperature gradient on the interface microstructure and diffusion of diffusion couples: Phase-field simulation

“…The diffusion path and microstructure evolution in the isothermal and stress-free multilayer diffusion couples formed by the model ternary alloy with miscibility gap have been studied by Pan et al [12] by using the phase-field simulation. Sohn and Dayananda [13] studied the double-serpentine diffusion path in annealed Fe-Ni-Al alloys, the average values of ternary interdiffusion coefficients were determined and employed to model the concentration profiles.…”

“…Therefore, this paper focuses on the effects of temperature gradient on the interface microstructure and diffusion through the interface of the diffusion couple, and the mutual interactions of composition difference and initial aging time (IAT) of the alloy in the diffusion couple are discussed with the temperature gradient. The phase-field simulation [11,12,15,16,[18][19][20][21][22] as a favorable method is adopted to study the interdiffusion and interface microstructure of diffusion couples under the temperature gradient. The linear temperature gradient is applied to the diffusion couples formed by the aged alloys with different initial aging times and different compositions including B-enriched α 1 and A-enriched α phases in the spinodal alloy, and the element diffusion direction and interface microstructure will be investigated under the temperature gradient by the phase-field simulation.…”