|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Magnesium Technology 2017
||I-45: Quasi-static and Dynamic Behavior and Microstructure Evolution of WE43 Rare Earth Magnesium Alloy: Experiments and Crystal Plasticity Modeling
||Mohammad Jahedi, Miroslav Zecevic , Brandon A. McWilliams , Irene J. Beyerlein, Marko Knezevic
|On-Site Speaker (Planned)
This paper describes the main results from an experimental investigation into the quasi-static and dynamic behavior of rolled and cast WE43 including the anisotropic stress-strain response, strain-hardening rates, tension/compression asymmetry, deformed sample geometry, concomitant evolution of crystallographic texture and deformation twin fraction. The examination is conducted in function of strain rates from 10-3 /s to 105 /s and testing direction. The comprehensive set of data is used to calibrate and validate a strain rate and temperature sensitive multi-scale finite element crystal plasticity model specifically adapted to the behavior of WE43. The same quantities as experimentally characterized are calculated with the model and good agreement is achieved in all aspects. These predictions allowed us to elucidate the role played by various slip and twin mechanisms on the mechanical behavior of WE43 as well as compare it with behavior of other magnesium alloys.