About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Aluminum Alloys, Characterization and Processing
|
Presentation Title |
Solutionization via Severe Plastic Deformation: Effect on Natural Aging in an Al-Mg-Si-(Mn) Alloy |
Author(s) |
Brian K. Milligan, B. Scott Taysom, Xiaolong Ma, Scott Whalen |
On-Site Speaker (Planned) |
Brian K. Milligan |
Abstract Scope |
Shear Assisted Processing and Extrusion (ShAPE), a severe plastic deformation technique that is fast and scalable, was used to produce thin-wall tubing from alloy 6082 (Al-0.8Mg-0.9Si-0.7Mn) with in-situ solutionization during processing quickly followed quenching. Quench medium and input material heat treatment were varied and natural aging behavior (T1 heat treatment) was evaluated using tensile testing. As-cast input material was found to have higher strength early in post-ShAPE natural aging and homogenized input material was found to have a more strengthening during natural aging. Water quenching gave both greater strength early in natural aging and more strengthening during natural aging versus air quenching. These observations along with microscopy suggest that 1. air quenching was too slow 2. as-cast material was not fully solutionized but plastic deformation broke up the coarse intermetallic particles, which provided strengthening and 3. homogenized material was solutionized well, which led to good natural aging behavior. |
Proceedings Inclusion? |
Planned: Light Metals |
Keywords |
Aluminum, Process Technology, Mechanical Properties |