2319　aluminum　alloy　was　prepared　using　wire　arc　additive　manufacturing　(WAAM)　technique.　The　solid　solution　time　of　achieving　improving　corrosion　resistance　in　WAAM　2319　aluminum　alloy　was　investigated.　The　results　indicated　that　the　as　deposited　2319　aluminum　alloy　was　composed　of　dendritic　grains.　Numerous　inter-granular　intermetallic　were　continuously　distributed　along　the　grain　boundary.　As　the　solid　solution　time　increased,　the　inter-granular　intermetallic　gradually　dissolved　into　α-Al　matrix　resulting　in　discontinuously　distribution　and　more　homogeneous　element　distribution.　Electrochemical　experiment　results　indicated　that　the　corrosion　potential　of　WAAM　2319　aluminum　alloy　gradually　increased　with　the　increase　of　solid　solution　time.　This　indicated　that　increasing　solid　solution　time　could　effectively　increased　the　corrosion　resistance　of　WAAM　2319　aluminum　alloy.　Improved　corrosion　resistance　can　be　attributed　to　refined　and　discontinuous　inter-granular　intermetallic.　©　2023　The　Authors