Precipitate morphologies predicted using discrete lattice descriptions

Abstract

The morphology analysis of BETA-85 wt% Nb precipitates in a hep ALFA-Zr (1 wt9r Nb) matrix is performed here. The anisotropy of the diffusion of vacancies and interstitials in the matrix, as predicted by a many-body potential (EAM-type). is explicitly included in the calculations. A variable anisotropic shape of stable precipitates is predicted. This result is compared with the previous one obtained by using a short-range pair potential.