7075 aluminium alloy homogenizing treatment method

A 7075 aluminium alloy homogenizing treatment method belongs to the technical field of aluminium alloy homogenizing heat treatment and aims to solve the problems that at present, 7075 aluminium alloy subjected to heat treatment is poor in homogenizing effect, and after finish of homogenizing, the alloy processability and the alloy end-product performance are influenced. The 7075 aluminium alloy homogenizing treatment method comprises the following steps: step 1, primary homogenizing treatment; step 2, secondary homogenizing treatment; step 3, solution treatment; step 4, quenching treatment; and step 5, 24-h temperature preservation of the quenched aluminium alloy within the temperature range of 115-125 DEG C. Through two-stage homogenizing treatment, a high supersaturated solid solubility can be obtained within a short period of time, and a very good organizational foundation is laid for follow-up solution, quenching and aging treatment. Meanwhile, owing to the short homogenizing temperature preservation time, very remarkable cost effectiveness is brought.