| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Light Alloys, Advanced Forming Processes and Characterization
|
| Presentation Title |
High Speed Extrusion of ZK60 Mg Alloy by Friction Extrusion Process |
| Author(s) |
Swapnil Ankush Sawalkar, Benjamin Schuessler, Jens Darsell, Dalong Zhang, Brandon Taysom, Md Reza-E-Rabby, Darrell Herling, David Field, Vineet Joshi |
| On-Site Speaker (Planned) |
Swapnil Ankush Sawalkar |
| Abstract Scope |
Friction extrusion is a solid phase extrusion process in which a rotating die generates frictional heat to soften and deform a billet locally, allowing it to flow through the die. In this study, 5 mm rods of ZK60 magnesium alloy rods were formed using this technique with an extrusion ratio of 40 and with extrusion speeds of 12.4 m/min and 14 m/min at 380°C and 450°C, respectively. The extrusion constant was also measured to be less than half than conventional processes, with values of 41.85 MPa and 30.20 MPa, respectively. The grain sizes of the extruded rods were 13.94 µm and 14 µm, respectively. Both rods showed a weak basal texture. Owing to this texture and microstructure, the ratio of compressive yield stress to tensile yield stress was observed to be close to 0.9. The UTS was 321 MPa and 324 MPa, and the elongation was 24.8 and 21.3, respectively. |