Journal
CORROSION SCIENCE
Volume 209, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2022.110727
Keywords
Aluminum alloys; Nanocrystalline alloys; Corrosion; High-energy ball milling; Al -Fe alloy; Microstructure
Funding
- Scientific and Technological Research Council of Turkiye (TUBITAK)
- State of North Carolina
- National Science Foundation [ECCS-2025064, NSF-CMMI 1760204, NSF-CMMI 2131440]
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Nanocrystalline Al-Fe alloy, produced by high-energy ball milling, exhibits uniform microstructure and high solid solubility of Fe. It shows high hardness and corrosion resistance, attributed to the nanocrystalline structure and formation of solid solution. The incorporation of Fe to the surface film and Fe enrichment at the alloy/surface film interface enhance the corrosion performance.
Nanocrystalline Al-Fe alloy, with uniform microstructure and high solid solubility of Fe, has been produced by high-energy ball milling. Cyclic potentiodynamic polarization tests revealed high pitting potential. Hardness and corrosion resistance of the Al-Fe alloy were higher than any commercial Al alloy. High hardness and corrosion resistance were attributed to the nanocrystalline structure and formation of solid solution. X-ray photoelectron spectroscopy, secondary ion mass spectrometry, and scanning transmission electron microscopy indicated the incorporation of Fe to the surface film and Fe enrichment at the alloy/surface film interface, which were attributed to the enhanced corrosion performance.
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