About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Lightweight Composites, Materials, and Alloys
|
| Presentation Title |
The Effects of Thermomagnetic Treatments on the Microstructure of AA7XXX Alloys |
| Author(s) |
Kirk A. Lemmen, Jackson Franklin, Alewi Damilola, Paul Rottmann, Dieter Isheim, Amir Rezaei Farkoosh, David N Seidman, Heather Murdoch, Daniel Magagnosc, Haluk Karaca |
| On-Site Speaker (Planned) |
Kirk A. Lemmen |
| Abstract Scope |
As global demand for aluminum alloys continues to rise, there is increasing interest in developing strengthening methods that reduce processing time and overall energy consumption. For precipitation-strengthened alloys such as AA7075, mechanical properties are strongly dependent on the formation and evolution of precipitates during natural and artificial aging. Accordingly, this study examines the influence of aging time, temperature, and applied magnetic field on precipitation behavior and the resulting mechanical performance. Magnetic fields ranging from 0 to 9 T were applied during artificial aging treatments, which were conducted between 120 and 170°C. The effects of these processing conditions on precipitate size, composition, number density, morphology, and spatial distribution were characterized using APT, XRD and SAXS. Mechanical properties were evaluated through tensile testing and Vickers hardness measurements. The potential of thermomagnetic aging as a novel approach for tailoring the microstructure and enhancing the properties of aluminum alloys is discussed. |