The third and forth order anharmonicity coefficients for Cu—Zn, Cu—Al, Cu—Sn solid solutions, determined by x-ray diffractometry data

Abstract

On the base of experimental data of thermal dependencies of relative integral intensities of x-ray diffractions for — solid solutions of Cu—Zn, Cu—Al, Cu—Sn concentration dependencies of x-ray characteristic temperature for these alloys at 293 and 923 K are determined. The obtained data were used for determination of quasielastic forse coefficients and for determination of anharmonicity coefficients of 3-th and 4-th orders for denoted alloys. Quantitative analysis of the interatomic interactions character depending on the composition and the valency of soluble elements in alloy matrix and their influence on change of potential energy curve shape is carried out.