Interdiffusion in the γ-phase of the binary alloys, for Mn contents of between 1 and 80at% and temperatures of between 750 and 850C (table 99), was investigated by using the Den Broeder method. It was found that there was a marked variation in the interdiffusion coefficient, with a maximum at 27at%Mn. The activation energy was consistent with an atom-vacancy exchange mechanism, and was greatest for the equi-atomic composition.

J.L.Aubin, D.Ansel, J.Debuiqne: Journal of the Less-Common Metals, l985, 113[2], 269-82