Study the temperature dependence of Elastic Modulus and Constants of Binary Alloys with Cubic Structure by Statistical Moment Method

摘要

The elastic properties of binary alloys with cubic structure have been studied using the analytic free energy formulas derived from the Statistical Moment Method (SMM). The dynamical elastic constants (Cn, C_(12), _C(44)), isothermal bulk modulus (B_T), Youngs modulus (E) and shear modulus (G) of binary alloys with cubic structure are calculated as a function of the temperature taking into account the enharmonic of thermal lattice vibrations. In most cases there is good agreement between this theory and experiment.