|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Advanced High-Strength Steels
||F-19: Modeling the Interplay between Transformation and Plasticity in Low-carbon Steels. A Micro-level Constitutive Model / RVE Approach
||Manuel Petersmann, Georges Cailletaud, Thomas Antretter
|On-Site Speaker (Planned)
To predict the macroscopic behavior of advanced high strength steels, their highly heterogeneous microstructural features must be taken into account. The challenge in writing a constitutive model is to depict microstructural interactions without spatial resolution. We propose a constitutive model on the microscale based on the hierarchical microstructural pattern of low-carbon steels (see e.g. Morito et al. 2006), taking into account all crystallographic variants and their interactions. Phase stresses are separately regarded by using the beta-rule (Cailletaud and Pivlin). The model is applied to a polycrystal RVE with random orientations and periodic boundary conditions in order to get the effect of mutual interaction between grains. Tension compression asymmetry and the transformation related backflow, observed in experiments (Nagayama 2003) are investigated.
||Planned: Supplemental Proceedings volume