Iron in solution with aluminum matrix after non-equilibrium processing: an atom probe tomography study |
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| Authors: | Brandon D. Saller Gang Sha Li Mei Yang Fan Liu Simon P. Ringer |
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| Affiliation: | 1. Department of Materials Science, University of California, Davis, CA, USA;2. School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, China;3. Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, Australia |
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| Abstract: | In this paper, we report on the influence of rapid solidification and severe plastic deformation on the solid solubility of Fe in Al. Atom probe tomography, for the first time, was performed on fine (3–4 μm diameter) and coarse (~100 μm) as-atomised Al-5 at.% Fe powder and cryomilled Al-5 at.% Fe powder. The atomised powders exhibited negligible Fe in solution with Al, whereas the cryomilled powder contained ~2 at.% Fe in solution. Moreover, our results suggest that severe plastic deformation is preferable to atomisation/rapid solidification for increasing the non-equilibrium solid solubility of Fe in Al. |
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| Keywords: | Atom probe Al–Fe alloys solubility rapid solidification cryomilling ultrafine-grained metals |
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