Diffusivities and atomic mobilities in the Ni-rich fcc Ni–Al–Cu alloys: experiment and modeling

Abstract The diffusivities along the whole diffusion path in one couple of Ni-rich fcc Ni–Al–Cu alloys at 1273, 1333 and 1433 K are obtained by means numerical inverse method. In total 12 couples used to obtain intersections paths Matano–Kirkaldy Two sets atomic mobilities assessed using CALTPP program based on calculated method method, respectively. validity is confirmed comparing model-predicted diffusivities, concentration profiles with measured ones. calculation higher efficiency can achieve same accuracy as present study demonstrates that combined reliably assess for alloys.