US 12,454,747 B1
Efficient aging methods for aluminum-lithium alloys based on dynamic strain precipitation
Xusheng Yang, Chongqing (CN); Weijiu Huang, Chongqing (CN); Xin Wang, Chongqing (CN); and Xianghui Zhu, Chongqing (CN)
Assigned to CHONGQING UNIVERSITY OF ARTS AND SCIENCES, Chongqing (CN)
Filed by CHONGQING UNIVERSITY OF ARTS AND SCIENCES, Chongqing (CN)
Filed on Oct. 14, 2024, as Appl. No. 18/915,343.
Application 18/915,343 is a continuation in part of application No. PCT/CN2023/128326, filed on Oct. 31, 2023.
Claims priority of application No. 202310999059.5 (CN), filed on Aug. 9, 2023.
Int. Cl. C22F 1/057 (2006.01); C22C 21/14 (2006.01); C22C 21/16 (2006.01); C22C 21/18 (2006.01)
CPC C22F 1/057 (2013.01) [C22C 21/14 (2013.01); C22C 21/16 (2013.01); C22C 21/18 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An efficient aging method for an aluminum-lithium alloy based on dynamic strain precipitation, comprising: ingot casting, homogenization treatment, hot rolling, solution heat treatment and quenching, and aging treatment, wherein
the method further comprises temperature-controlled and rate-controlled deformation treatment between the solution heat treatment and quenching and the aging treatment, the temperature-controlled and rate-controlled deformation treatment includes performing preheating, temperature-controlled and rate-controlled hot rolling, and cooling treatment on an aluminum-lithium alloy sheet after the solution heat treatment and quenching in sequence, the temperature-controlled and rate-controlled hot rolling has a rolling temperature of 250° C.-330° C., a rolling reduction of 10%-30%, and a strain rate of 0.001 s−1-0.5 s−1, and an alloy chemical composition of the aluminum-lithium alloy includes Cu: 2.7 wt %-2.8 wt %, Li: 1.7 wt %-1.9 wt %, Mg: 0.3 wt %-0.5 wt %, Mn: 0.3 wt %-0.5 wt %, Zn: 0.5 wt %-0.7 wt %, Zr: 0.08 wt %-0.12 wt %, Si≤0.05 wt %, and Fe≤0.07 wt %.