|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advanced Characterization Techniques for Quantifying and Modeling Deformation
||Slip System Kinematic Hardening-based Simulation of Reverse Plasticity in Nanoindentation of β-tin
||Zhuowen Zhao, Aritra Chakraborty, Martin A. Crimp, Thomas R. Bieler, Philip Eisenlohr
|On-Site Speaker (Planned)
Time-dependent reverse plasticity was observed and quantified after indenting individual grains of β-tin at 0.6 homologous temperature and unloading the indenter tip. The amount of reverse plasticity is found to mainly correlate with indentation depth, while its rate is possibly a strong function of temperature. Indentation simulations based on crystal plasticity models that incorporate only isotropic hardening are not able to capture such reverse plasticity. We investigate whether the adoption of a simple Voce-type non-linear kinematic hardening rule (following Wollmershauser et al.) is sufficient to recover the observed time-dependent reverse plasticity that likely due to reversible configurations of dislocations.
||Planned: Supplemental Proceedings volume