EUROPEAN CONGRESS AND EXHIBITION ON ADVANCED MATERIALS AND PROCESSES - EUROMAT 2021

The mechanisms governing variant selection phenomena in bainitic microstructures formed during ausforming treatments are not fully understood yet. Previous results cannot be explained by the same rule, which suggests that variant selection is controlled by different mechanisms depending on the steel. In this work, we aim to understand the mechanisms governing variant selection in a medium carbon-high silicon steel subjected to ausforming treatments. A microstructural characterization carried out in different regions of barreled samples has been combined with Finite Elements simulations and Crystal Plasticity simulations, respectively. It has been shown that variant selection can be explained by understanding the distribution of the plastic strains at the macro and micro level in these microstructures.