About this Abstract |
Meeting |
12th International Conference on Magnesium Alloys and their Applications (Mg2021)
|
Symposium
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12th International Conference on Magnesium Alloys and their Applications (Mg 2021)
|
Presentation Title |
Effect of Deformation Temperature on Microstructure and Texture Evolution in Cast AZ80 Magnesium Alloy |
Author(s) |
Paresh Prakash, Mary Wells, Bruce Williams |
On-Site Speaker (Planned) |
Paresh Prakash |
Abstract Scope |
This research studies the effect of deformation temperature on the microstructure and texture development in a cast AZ80 magnesium alloy within 300°C-400°C. The thermodynamic-stability of the Mg17Al12 phase greatly decreased with an increase in the deformation temperature. The precipitates were present in multiple morphologies in the material deformed at 300°C, while the different precipitate morphologies affected the occurrence of DRX in the material differently. Mg17Al12 precipitates in the lamellar morphology are suggested to have promoted DRX and texture randomization, while in the lath morphology restricted the occurrence of DRX. Mg17Al12 precipitates were not present in the material deformed at 400°C, while the DRX took place by the grain boundary bulging mechanism, and the DRXed grains preserved the deformation texture. The results indicate that the effect of deformation temperature on the microstructure and texture evolution is especially pronounced for this alloy owing to the changing thermal-stability of the Mg17Al12 precipitates. |
Proceedings Inclusion? |
Planned: At-meeting proceedings |