Influence of cooling rate on the microstructure and corrosion behavior of Al-Fe alloys

Dorin, T., Stanford, N., Birbilis, N. and Gupta, R. K. 2015, Influence of cooling rate on the microstructure and corrosion behavior of Al-Fe alloys, Corrosion science, vol. 100, pp. 396-403, doi: 10.1016/j.corsci.2015.08.017.

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Title Influence of cooling rate on the microstructure and corrosion behavior of Al-Fe alloys
Author(s) Dorin, T.ORCID iD for Dorin, T.
Stanford, N.
Birbilis, N.
Gupta, R. K.
Journal name Corrosion science
Volume number 100
Start page 396
End page 403
Total pages 8
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2015-11
ISSN 0010-938X
Keyword(s) A. Aluminum
B. Polarisation
C. Passivity
C. Pitting corrosion
Science & Technology
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Materials Science
Pitting corrosion
Summary The effect of Fe in Al is technologically important for commercial Al-alloys, and in recycled Al. This work explores the use of the novel rapid solidification technology, known as direct strip casting, to improve the recyclability of Al-alloys. We provide a comparison between the corrosion and microstructure of Al-Fe alloys prepared with wide-ranging cooling rates (0.1. °C/s to 500. °C/s). Rapid cooling was achieved via direct strip casting, while slow cooling was achieved using sand casting. Corrosion was studied via polarisation and immersion tests, followed by surface analysis using scanning electron microscopy and optical profilometry. It was shown that the corrosion resistance of Al-Fe alloys is improved with increased cooling rates, attributed to the reduced size and number of Fe-containing intermetallics.
Language eng
DOI 10.1016/j.corsci.2015.08.017
Field of Research 091207 Metals and Alloy Materials
030699 Physical Chemistry not elsewhere classified
0912 Materials Engineering
0905 Civil Engineering
0913 Mechanical Engineering
Socio Economic Objective 861203 Metal Castings
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Elsevier
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Document type: Journal Article
Collection: Institute for Frontier Materials
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