A　7075/5356　aluminum　alloy　laminated　composite　was　fabricated　by　alternately　depositing　a　7075　wire　and　a　5356　wire　layer　by　layer　using　wire　arc　additive　manufacturing　(WAAM).　The　microstructure　and　mechanical　properties　of　the　produced　components　under　as-deposited　and　heat-treated　conditions　were　investigated.　The　results　revealed　that　the　grain　morphology　of　the　specimen　was　mainly　composed　of　equiaxed　grains　in　each　layer,　while　the　grain　size　of　the　interlayer　region　was　reduced　due　to　the　heterogeneous　nucleation　relying　on　the　partially　remelted　previous　layer.　Moreover,　a　reduced　amount　of　second　phase　was　observed　due　to　decreased　Zn　and　Cu　alloying　elements　content　in　this　region,　which　resulted　in　a　gradient　change　in　microhardness　distribution.　The　tensile　strength　and　elongation　of　the　heat-treated　samples　in　vertical　and　horizontal　directions　were　321　MPa,　10.12　%,　and　377　MPa,　9.72　%,　respectively.　The　results　indicated　good　comprehensive　mechanical　properties,　which　is　promising　for　further　application　of　WAAM　fabricated　laminated　metal　composite.　©　2024　Elsevier　B.V.