| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2020
|
| Presentation Title |
Deformation Driven Precipitation in Binary Magnesium Alloys |
| Author(s) |
Timothy P. Weihs, Suhas Eswarappa Prameela |
| On-Site Speaker (Planned) |
Timothy P. Weihs |
| Abstract Scope |
Unlike Al alloys, precipitation strengthening of Mg alloys has proven challenging. Precipitate density is typically too low and precipitate size is often too large and elongated to enhance the resistance to plastic deformation significantly. Mimicking recent work in Al alloys, we are exploring how low temperature plastic deformation can enhance both the density, size, and morphology of common intermetallic particles and thereby lead to significant hardening in Mg alloys. The low temperatures tend to favor nucleation over growth while the deformation provides vacancies and dislocations that can assist nucleation. Using equal channel angular extrusion, simple compression, and moderate temperatures, we explore the processing and thermodynamic factors controlling nucleation and growth of precipitates in Mg-Al and Mg-Zn binary alloys and we compare the resulting intermetallic particles with those that are generated through conventional aging. |
| Proceedings Inclusion? |
Planned: |