Abstract
A highly parallelised three-dimensional finite element crystal plasticity framework is used to investigate the influence of grain sphericity, number of cross-sectional grains and grain size distribution on the tensile stiffness and yield strength in austenitic stainless steel. Open-source software packages Neper and FEpX were adopted to generate a wide range of synthetic 3D microstructures and to perform crystal plasticity simulations, respectively. Aspects of small-scale simulations with reasonable accuracy and caution in modelling the mechanical properties of thin and/or large grain size specimens are also discussed. This study aims to provide guidelines for estimating mechanical properties in single-phase polycrystalline materials exhibiting wide grain size distributions.
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