The　tendency　of　AA3003　towards　localized　corrosion　is　one　of　the　most　challenging　issues　for　its　broader　use.　Intermetallic　phases　(IMPs)　in　AA3003　play　dual　contradictory　roles:　strengthening　effect　and　initiating　pitting.　Solving　this　contradiction　contributes　to　improvement　of　corrosion　resistance　and　fully　utilizing　the　potential　of　materials.　Herein,　a　superhydrophobic　surface　with　IMPs　in-situ　pinning　effect　was　fabricated　via　a　chemical　etching　approach　combined　with　stearic　acid　(STA)　modification.　Thus,　IMPs　can　provide　sound　support　for　the　superhydrophobic　surface　and　meanwhile　eliminate　the　adverse　effect　of　promoting　localized　corrosion.　Formation　mechanism　of　etching　structure　was　attributed　to　the　synchronous　chemical　reaction　of　IMPs　and　matrix　phases　in　the　etchant.　Further　modification　with　STA　changed　mico/nano　hierarchical　surface　from　hydrophilicity　to　superhydrophobicity.　The　as-prepared　surface　exhibited　a　maximum　static　contact　angle　of　similar　to　169　degrees　and　a　sliding　angle　of　similar　to　1　degrees,　possessing　excellent　superhydrophobicity.　Besides,　the　wettability,　self-cleaning,　chemical　stability,　mechanical　durability,　and　corrosion　resistance　properties　of　the　superhydrophobic　surface　were　comprehensively　investigated.　The　results　showed　that　the　corrosion　inhibition　efficiency　exceeded　99%　in　3.5　wt%　NaCl　solution.　The　pinning　direction　of　IMPs　in　superhydrophobic　surface　influenced　its　properties.　It　is　anticipated　that　the　construction　of　super-hydrophobic　surfaces　will　broaden　its　promising　applications.　(C)　2021　Elsevier　B.V.　All　rights　reserved.