|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Magnesium Alloy Development: An LMD Symposium in Honor of Karl Kainer
||Interaction between Propagating Twins and Non-shearable Precipitates in Magnesium Alloys
||Matthew Barnett, Huan Wang
|On-Site Speaker (Planned)
The impact of non-shearable particles on the stress required to propagate a twin is examined using numerical and analytical techniques. Of particular note is the nature of this effect in magnesium alloys where twinning can count for a significant fraction of the plastic strain. Discrete Dislocation Dynamics simulations are employed to calculate the Orowan bypass stress. It is seen that the stress for bypass frequently exceeds that for a single twinning dislocation but under some circumstances it may be lower. The conditions that give rise to different regimes of behaviour are mapped out and the significance for magnesium alloy design is described.