A study on the mechanical response of magnesium using an anisotropic elasticity twinning CP FEM

An efficient temperature-dependent crystal plasticity framework for pure magnesium with emphasis on the competition between slip and twinning

“…Understanding the nature of the controversial findings and the competition between the pyramidal II and the CT systems will, among others, be the subject of this investigation. Recently, the question was raised whether pyramidal I ⟨𝑐 + 𝑎⟩ or pyramidal II slip was the predominant mode: Kweon and Raja (2021), Zecevic et al (2018), andXie et al (2016) suggested that pyramidal I ⟨𝑐 + 𝑎⟩ slip may be the dominant mode. Since, however, little is known about the temperature-dependent behavior of pyramidal I ⟨𝑐 + 𝑎⟩ slip, investigating this additional controversy lies outside the scope of this work.…”

“…In this study, we focus on continuum-level mesoscale modeling, which admits simulating large ensembles of grains, while being efficient and incorporating the underlying deformation modes to investigate the microstructure evolution. When adopting the nomenclature of Liu et al (2017), phenomenological mesoscale approaches can be categorized as top-down (Ardeljan et al, 2016;Knezevic et al, 2009;Tam et al, 2020;Chen et al, 2020) and bottom-up (Chang and Kochmann, 2015;Liu et al, 2017;Zhang and Joshi, 2012;Kweon and Raja, 2021) based on the model calibration. Top-down approaches use experimental polycrystal data to calibrate the model parameters, whereas bottom-up approaches calibrate a single-crystal plasticity (SCP) model with available experimental data and use that SCP description locally in a polycrystalline simulation framework.…”