Patent ID: 11913104
Assignee: WUHAN UNIVERSITY OF TECHNOLOGY
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  Y | IPC C

Claim 0:
1. A forming method of an aluminum alloy, comprising the following steps:
step S1, conducting a solution treatment and quenching on a heat-treatable strengthened aluminum alloy sheet blank, to obtain a W-temper aluminum alloy sheet blank, wherein the heat-treatable strengthened aluminum alloy sheet blank is selected from the group consisting of a 2000 series aluminum alloy sheet blank and a 6000 series aluminum alloy sheet blank and a 7000 series aluminum alloy sheet blank;
step S2, conducting pre-hardening treatment on the W-temper aluminum alloy sheet blank for 1 h to 24 h to obtain a pre-hardened sheet blank, wherein under a condition that the heat-treatable strengthened aluminum alloy sheet blank is the 2000 series aluminum alloy sheet blank, the pre-hardening treatment is carried out at 130° C. to 180° C., and forms a GPII zone with a diameter of 1 nm to 5 nm and a length of 1 nm to 15 nm in the pre-hardened sheet blank; under a condition that the heat-treatable strengthened aluminum alloy sheet blank is the 6000 series aluminum alloy sheet blank, the pre-hardening treatment is carried out at 130° C. to 160° C. and forms a GPII zone with a diameter of 1 nm to 5 nm and a length of 1 nm to 30 nm in the pre-hardened sheet blank, the GPII zone comprising initial β″ and pre β″, and wherein the GPII zone accounts for 60% to 100% of the pre-hardened sheet blank;
step S3, using the pre-hardened sheet blank blank as a batch supply blank for cold forming; and
step S4, conducting cold forming on the pre-hardened sheet blanks blank, such that the pre-hardened sheet blank has a deformation of 1% to 20%, to obtain a final component.