Effect of Gibbs Free Energies of Terminal Alloys on the Diffusion Paths and Diffusion Depths in Couples Assembled with γ-Phase Fe-Ni-Cu Alloys at 1000 °C

A novel concept for diffusion couples based on iso-Gibbs free energy of mixing (iso- Δ G M ) is proposed, in which the two terminal alloys of the couple have the same Gibbs free energy of mixing. A few iso- Δ G M couples were assembled with FCC Fe-Ni-Cu alloys at 1000 °C. To enable the selection of...

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