An Elasto-Plastic Micromechanical Method for Twin Driven Plasticity

Abstract

In this work, a mean-field self-consistent approach based on a generalization of the Tanaka-Mori method is introduced to predict the mechanical response of polycrystalline Mg. The key idea is to homogenize the response of grains containing twin domains such that a direct coupling between the twin and parent domain is introduced. The work is particularly suited to study Mg as it allows for a direct coupling of the mechanical response of twin and parent domains. Such coupling accounts, for the first time, for relative size and shape effects on the development of internal strains in twin domains.