Tracer diffusion via the agency of vacancies in a simple cubic binary alloy with long-range order was simulated using a Monte Carlo method. Extensive results for the exchange frequencies, vacancy availability factors and tracer correlation factors were collected over the entire composition range at five temperatures. It was found that the ordered region slowed down diffusion from that expected from an extrapolation of the behavior from the disordered region. The stoichiometric composition signaled the greatest configurational impediment to diffusion; much of this was provided by the tracer correlation factor.

Computer Simulation of Tracer Diffusion in a Concentrated Alloy with Long-Range Order. G.E.Murch: Philosophical Magazine A, 1982, 46[4], 565-73