Short‐ and Long‐Range Ordering in Binary Alloys
Ludwik Dąbrowski · physica status solidi (b) · 1985
Abstract Starting from a pair interaction model a generalized theory of ordered binary alloys is derived. Such approach is applicable for arbitrary alloy structures with any given number of long‐ and short‐range parameters and also for all possible numbers of interaction potentials and component concentrations. On the base of pair correlation functions a new definition of short‐range ordering parameters is proposed. Some explicit forms of correlation functions above critical temperature Tc are obtained. The computed results are compared with experimental data for the case of β‐brass. With the accuracy to third‐order perturbation theory, interactions and ordering in 13 coordination shells are considered.