| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2021
|
| Presentation Title |
Thermally Activated Nature of Basal and Prismatic Slip in Mg and Its Alloys |
| Author(s) |
Mohammed A. Shabana, Jishnu J. Bhattacharyya, Marek Niewczas, Sean R. Agnew |
| On-Site Speaker (Planned) |
Mohammed A. Shabana |
| Abstract Scope |
Some Mg alloys have been observed to exhibit dynamic strain aging, serrated flow, or the Portevin-Le Chatelier (PLC) effect. Curiously, the effects occur at RT in some alloys and at higher temperatures in others. The observations are distinct from more common FCC and BCC alloys, which exhibit these phenomena in a given temperature and strain rate range, which is explainable in terms of dislocation velocities, obstacle spacings, and solute diffusivities. The lecture will begin with a survey of the observations and recent theoretical advances. Explanations for the diverse observations in Mg alloys will be suggested in terms of the diverse deformation mechanisms (basal and non-basal slip and twinning) known to operate in these alloys as well as the diverse microstructures (textures, grain sizes, and precipitates) present in the materials. |
| Proceedings Inclusion? |
Planned: |