Influence of β-Mg₁₇Al₁₂ and Al-Mn intermetallic compounds on the corrosion behaviour of cast and solution treated Mg-Al-Zn-Mn alloys
File(s)
Accepted version
Author(s)
Type
Journal Article
Abstract
This study aims to investigate the correlation between the microstructure and corrosion behaviour of AZ series alloys, using analytical scanning electron microscopy, X-ray computed tomography, hydrogen evolution test, weight loss method, electrochemical measurement, and observation of corroded morphology. The results indicate that a 3D interconnected eutectic network is effective in preventing localized corrosion in chloride solution. It is also revealed that solution treated Al-Mn intermetallics lead to filiform corrosion, rather than pitting corrosion, as seen τ-AlMn and Al8Mn5 particles. This is due to the potential difference reduction between the complete Al11Mn4 shell and the α-Mg matrix.
Date Issued
2023-09
Date Acceptance
2023-06-23
Citation
Corrosion Science, 2023, 222
ISSN
0010-938X
Publisher
Elsevier
Journal / Book Title
Corrosion Science
Volume
222
Copyright Statement
Copyright © Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
Identifier
http://dx.doi.org/10.1016/j.corsci.2023.111363
Publication Status
Published
Article Number
111363
Date Publish Online
2023-06-27