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Exfoliation Corrosion Behavior of 2B06 Aluminum Alloy in a Tropical Marine Atmosphere

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Abstract

In this study, corrosion behavior of 2B06 aluminum alloy was investigated after exposure to a tropical marine atmosphere for up to 4 years. After 6 months, the specimen showed exfoliation corrosion as well as rapid increase in thickness loss and corrosion rate. Exfoliation corrosion was found to initiate from hydrogen-assisted intergranular cracks and propagate extensively due to the wedge effect of the corrosion products. During the exposure test, corrosion on the groundward surface was considerably more severe than that on the skyward surface, which could be attributed to the different exposure conditions on the two surfaces.

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Acknowledgment

The authors wish to acknowledge the financial support from National Basic Research Program of China (973 Program project, No. 2014CB643300) and the National Science and Technology Basic Project from the Ministry of Science and Technology of China (No. 2012FY113000).

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Authors and Affiliations

  1. Corrosion and Protection Center, University of Science and Technology Beijing, Beijing, 100083, China

    Z. Y. Cui, X. G. Li, K. Xiao, C. F. Dong, D. W. Zhang & Z. Y. Liu

  2. Pipeline Research Institute of China National Petroleum Corporation, Langfang, 065000, China

    L. W. Wang

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  1. Z. Y. Cui
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  2. X. G. Li
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  3. K. Xiao
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  4. C. F. Dong
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Correspondence to X. G. Li.

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Cui, Z.Y., Li, X.G., Xiao, K. et al. Exfoliation Corrosion Behavior of 2B06 Aluminum Alloy in a Tropical Marine Atmosphere. J. of Materi Eng and Perform 24, 296–306 (2015). https://doi.org/10.1007/s11665-014-1258-3

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  • DOI: https://doi.org/10.1007/s11665-014-1258-3

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