|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Computational Materials Discovery and Optimization: From 2D to Bulk Materials
||A Differential-Exponential Hardening Model for Crystal Plasticity Modeling of Single Crystals
||Aboozar Mapar, Farhang Pourboghrat, Thomas R. Bieler
|On-Site Speaker (Planned)
Stress-strain curve of single crystals usually involves three stages. The deformation starts with activation of a single slip system. At this stage there is not much dislocation interactions and therefore the hardening rate is low. The next stage is when other slip systems active and rapidly increase the hardening rate. In the third stage cross slip happens and hardening rate decreases.
Classical hardening model can only capture the first part of the stress-strain curve. In this study a new hardening model is proposed that can capture the first and second stages of the deformation. This model has been evaluated for Niobium single crystals and has successfully predicted the deformation behavior of it.
||Planned: A print-only volume