Abstract
Processing materials under magnetic fields is an underexplored technique to improve structure and mechanical properties in metals and alloys. Magnetic fields can alter phase stability, modify diffusion characteristics, and alter material flow substantially. In castings, magnetic fields can be used during melting of the alloy, during solidification, or during postprocessing operations such as heat treatment to achieve structural changes. This work investigates the effectiveness of thermomagnetic processing during heat treatment of Al alloys containing in the Al–Cu, Al–Si–Cu, and Al–Mg–Ce systems. We demonstrate an improvement in mechanical properties and a reduction in required heat treatment times for all alloys.
| Original language | English |
|---|---|
| Pages (from-to) | 49-59 |
| Number of pages | 11 |
| Journal | International Journal of Metalcasting |
| Volume | 15 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2021 |
Funding
This work was supported in part by Crada/NFE-15-05869 and performed under the auspices of the U.S. DOE with ORNL under contract DE-AC05-00OR22725 within the Critical Materials Institute, an Energy Innovation Hub funded by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office. A special thanks to American Magnetics, Inc., for the discussions, magnet drawings, and partnership relating to this work. This work was supported in part by Crada/NFE-15-05869 and performed under the auspices of the U.S. DOE with ORNL under contract DE-AC05-00OR22725 within the Critical Materials Institute, an Energy Innovation Hub funded by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office. A special thanks to American Magnetics, Inc., for the discussions, magnet drawings, and partnership relating to this work. This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).
| Funders | Funder number |
|---|---|
| American Magnetics, Inc. | |
| U.S. Department of Energy | |
| Advanced Manufacturing Office | |
| Office of Energy Efficiency and Renewable Energy | |
| Oak Ridge National Laboratory | DE-AC05-00OR22725 |
Keywords
- aluminum alloys
- heat treatment
- hot isostatic pressing
- magnetic field processing