Ternary diffusion in Cu-rich fcc Cu–Al–Si alloys at 1073K.

Highlights: [•] Interdiffusivities in Cu-rich fcc Cu–Al–Si alloys at 1073K were determined. [•] The present results were compared with experimental data in boundary binary systems. [•] The present results were validated by thermodynamic constraints and Fick’s law. [•] The sign of ternary cross diffusivities was predicted in terms of thermodynamics. [Copyright &y& Elsevier]