|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Magnesium Technology 2018
||C-72: Interaction of Glide Dislocations with Extended Precipitates in Mg-Nd Alloys
||Zhihua Huang, John Allison, Amit Misra
|On-Site Speaker (Planned)
This research reveals the unit processes of precipitate-dislocation interaction in dilute Mg-Nd alloys through in situ indentation experiments in TEM. Results suggest that pinned dislocations can glide along the broad facets of extended precipitates β1, which is a common strengthening phase in Mg- rare earth (RE) alloys. A dislocation-theory based analysis suggests that the shape, spacing and orientation (with respect to the glide plane) of β1 precipitates may favor glide of pinned dislocations along interfaces as opposed to the classical mechanism of bowing and looping around the precipitate.