Dynamical scaling of structure function in quenched binary alloys

We study the structure functions S(k, t) obtained from computer simulations of the time evolution of a segregating binary alloy following quenching into the miscibility gap. They are shown to have a simple scaling behavior, S(k, t) ∼ K^-3(t) F(k/K(t)). The shape of the function F(x) depends somewhat on the part of the coexistence region into which the quench is made. Comparison with some recent experiments on quenched alloys is quite satisfactory. The time evolution of K^-3(t) appears to be linear for late times, consistent with the Lifshitz-Slyozov theory.