Matter transport via <110> dumb-bell interstitials in a body-centered cubic random alloy was analysed by using a treatment which was based upon linear response theory. Four different jump mechanisms for the dumb-bell were considered. It was found that relationships could be deduced which gave 2 of the 3 phenomenological coefficients in terms of the third. These relationships were analogous to the exact Moleko-Allnatt ones which had been deduced for vacancy diffusion in a random alloy. Monte Carlo simulations showed that the present relationships were quite accurate, and might even be exact.

Atomic Diffusion by the Dumb-Bell Mechanism in a Concentrated Random BCC Alloy. S.Sharma, D.K.Chaturvedi, I.V.Belova, G.E.Murch: Philosophical Magazine Letters, 2000, 80[1], 65-72