Three-dimensional characterization of strain localization bands in high-resolution elastoplastic polycrystals

摘要

In crystalline materials, the experimental observation of the localization of plastic strains in particular directions is generally restricted to the surface of a sample containing some hundreds of grains, because of the difficulties underlying microstructural analysis. In these conditions, the determination of the morphological characteristics of localization can be limited by the poor statistical representativity of the domain of observation. The purpose of this work is to extend the analysis of localization - localization bands or else - to the 3D elastoplastic strain fields of a high-resolution representative volume element of a polycrystal.