Abstract
The stress corrosion cracking (SCC) of high-strength 2024-T351 and 7075-T651 aluminum alloys in simulated marine atmospheric medium containing HSO3− was investigated. The results showed that the presence of HSO3− could significantly accelerate the corrosion process of 2024-T351 and 7075-T651 high-strength aluminum alloy. This process was attributed to the enhanced anodic dissolution and hydrogen embrittlement caused by the HSO3−. The SCC susceptibility showed an increasing trend in both of aluminum alloys with increasing HSO3− concentration. Meanwhile, the hydrogen generated by HSO3− was shown to change the failure mode of these two aluminum alloys.
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We acknowledge National Natural Science Foundation of China (Nos. 51701102), the Fundamental Research Funds for the Central Universities (No. 201762008), and the National Environmental Corrosion Platform.
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Ge, F., Zhang, L., Tian, H. et al. Stress Corrosion Cracking Behavior of 2024 and 7075 High-Strength Aluminum Alloys in a Simulated Marine Atmosphere Contaminated with SO2. J. of Materi Eng and Perform 29, 410–422 (2020). https://doi.org/10.1007/s11665-019-04537-7
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DOI: https://doi.org/10.1007/s11665-019-04537-7