Microstructure and tensile properties of 5182 aluminum alloy sheets treated under different annealing processes through anodized coating and tensile testing were systematicly studied.The results show that the longer the annealing time is,the larger the grain size of the sheet becomes,and the unsynchronized deformation of the grain size can lead to a shortened yield plateau.The dislocation density in the matrix can be reduced by increasing the annealing temperature.Water cooling can hinder the diffusion of solute atoms towards dislocations,reduce the interaction between solute atoms and dislocations,which helps eliminate the Lüders band during the sheet stamping process.With the increase of annealing temperature,the tensile strength and yield strength of 5182 aluminum alloy sheet is decreased,and when annealed at the same temperature,the strength of furnace cooled alloy sheet is lower than that of air cooled and water cooled,while the change in elongation is not significant.
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