About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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Aluminum Alloys, Processing and Characterization
|
Presentation Title |
Plastic Flow of AA6013-T6 at Elevated Temperatures and Subsequent Reaging to Regain Full Strength |
Author(s) |
Katherine Rader, Louis G. Hector, Jon T. Carter, Eric M. Taleff |
On-Site Speaker (Planned) |
Katherine Rader |
Abstract Scope |
Combining a retrogression heat treatment with simultaneous warm forming can increase the formability of certain high-strength aluminum alloys while allowing peak-aged strength to be recovered with a single reaging heat treatment. This new process is called retrogression-forming-and-reaging (RFRA). Elevated-temperature tensile tests of AA6013-T6 were performed over a range of temperatures and strain rates, followed by a reaging heat treatment, to investigate the potential of RFRA. The flow stresses measured at a true strain of 0.10 ranged from 230 MPa at 250°C and 3.2×10<sup>-3</sup> s<sup>-1</sup> to 290 MPa at 230°C and 10<sup>-1</sup> s<sup>-1</sup>. The average elongation to rupture and reduction in area under the conditions studied were 22% and 56%, respectively, which are comparable to the room-temperature ductility of AA6013-T4. Subsequent reaging of the specimens, however, raised the hardness to 96% of the T6 hardness, which is much higher than the T4 condition. Recommendations for implementing RFRA of AA6013-T6 are presented. |
Proceedings Inclusion? |
Planned: Light Metals |