<p>The corrosion and pitting behavior of 2A14 aluminum alloy exposed to the marine atmosphere for six months were investigated. This study provides novel insights into the corrosion mechanisms of 2A14 aluminum alloy under marine atmospheric conditions, which are critical for improving its corrosion resistance in such harsh environments. The results indicated that severe pitting corrosion occurred on the surface of the 2A14 aluminum alloy, with pitting corrosion being identified as the primary form of corrosion. According to XPS analysis, the main corrosion products on the sample surfaces after six months of exposure at three different marine sites were Al₂O₃, Al(OH)₃, and AlCl₃. Notably, the corrosion degree of samples exposed closer to the coast was significantly greater, highlighting the influence of proximity to the sea on corrosion severity. The charge transfer resistance of the material decreased with increasing exposure time, suggesting a progressive degradation of the material's surface resistance to corrosion. Importantly, the corrosion products formed on the alloy surface exhibited stronger protective properties than the natural oxide film, although their protectiveness initially increased and then decreased as the corrosion process continued. This finding is novel and has significant implications for understanding the complex interplay between corrosion products and the underlying alloy surface. The results of this study will help guide the design, fabrication, and evaluation of 2A14 aluminum alloy, especially for applications in marine environments, by providing a deeper understanding of its corrosion behavior and potential strategies for enhancing its durability.</p>