| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Solid Phase Processing Symposium
|
| Presentation Title |
Simultaneously Reducing Mechanical Anisotropy and Enhancing Ductility in Mg Alloys by Advanced Solid Phase Processing |
| Author(s) |
Dalong Zhang, Vineet V Joshi, Jens T Darsell, Nicole R Overman, Scott A Whalen, Darrell R Herling |
| On-Site Speaker (Planned) |
Dalong Zhang |
| Abstract Scope |
Solid phase processing techniques such as friction stir welding, Shear assisted processing and extrusion (ShAPE)/ friction extrusion and cold spray have been successfully demonstrated as promising thermomechanical methods to produce metallic materials with enhanced performance. In this study, AZ series Mg alloys in the as-received forms, i.e., as-cast or as-extruded, were processed using friction extrusion. Microstructural characterization was performed using EBSD and TEM and revealed that as compared to the feedstock materials/ billets, the friction extruded Mg alloys had more uniform microstructure, equiaxed grains, finer and homogeneously distributed precipitates and chemical homogeneity. It was also observed that the basal planes were not oriented parallel to the extrusion axis. As a result, the rod products exhibited significantly reduced or eliminated the mechanical anisotropy and achieved enhanced ductility, which were uncommon or difficult to attain using conventional processing techniques. In addition, the modified texture likely suppressed deformation twinning under compressive deformation. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |