| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Light Alloys, Advanced Forming Processes and Characterization
|
| Presentation Title |
Precipitate Evolution and Properties of 7xxx Aluminum Alloy Under the Influence Magnetic Field Annealing |
| Author(s) |
Damilola Alewi, Kirk Lemmen, Clé Sanchez, Heather Murdoch, Daniel Magagnosc, Haluk Karaca, Paul Rottmann |
| On-Site Speaker (Planned) |
Damilola Alewi |
| Abstract Scope |
Processing of ultra-high strength 7xxx aluminum alloys relies on the formation of nanoscale strengthening precipitate phases during tempering. Conventionally, the T6 temper is peak aged/strength and can approach 24 hours in length. Previous studies have shown that this time can be reduced considerably by the application of a magnetic field during the aging step. In this study, selected candidate 7xxx alloys were subjected to magnetic field (0-4 T) annealing at time steps below 4 hours to investigate the early precipitation dynamics of precursor GP zones and subsequent strengthening phases. The evolution and kinetics of the precipitate phases were studied with the aid of small angle x-ray scattering technique (SAXS) and transmission electron microscopy (TEM). The primary goal of this work is to identify the alloy compositions most susceptible to magnetic field annealing to reduce necessary aging times and tailor and enhance its overall properties. |