High-temperature ultra-short-time annealing process for avoiding A-type Ludders belt of 5XXX series aluminum alloy

The invention provides a high-temperature ultra-short-time annealing process for preventing an A-type Ludders belt from appearing on a 5XXX-series aluminum alloy. The high-temperature ultra-short-time annealing process comprises the steps of preparing a cold-rolled 5XXX-series aluminum alloy, performing heat treatment and performing annealing treatment, heat treatment: controlling the temperature of a heat treatment furnace to be 500-550 DEG C; and annealing treatment is conducted, specifically, the plate is placed in a heat treatment furnace for heat preservation, after heat preservation is completed, the plate is placed in cold water within 3 s and cooled to the room temperature, and the annealed 5XXX series aluminum alloy plate is obtained. According to the annealing process, a high-temperature ultra-short time mode is utilized, the number of pinned dislocation in a base body is reduced, and a yield platform is shortened, so that an A-type Ludders belt generated in the 5XXX series aluminum alloy stamping f