Evaluating the mechanical properties of grain-boundary phases in nano- and submicrocrystalline materials using a model of an elastic multilayer periodic medium

摘要

It is shown that determination of the mechanical characteristics of grain-boundary phases in nano- and submicrocrystalline materials using the results of sound velocity measurements interpreted within the framework of the Reuss and Voigt models is incorrect. A more general method is proposed for this purpose, which is based on the model of elastic wave propagation in a multilayer periodic medium.