US 11,952,645 B2
Refined goss-grain aluminum alloy plate and preparation method thereof
Zhiyi Liu, Changsha (CN); Fei Liu, Changsha (CN); and Guangyu He, Changsha (CN)
Assigned to Central South University, Changsha (CN); and Changsha Xingxiao Material Technology Co., Ltd., Changsha (CN)
Filed by Central South University, Changsha (CN); and Changsha Xingxiao Material Technology Co., Ltd., Changsha (CN)
Filed on Jul. 15, 2022, as Appl. No. 17/865,542.
Prior Publication US 2024/0018634 A1, Jan. 18, 2024
Int. Cl. C22C 21/16 (2006.01); C21D 8/02 (2006.01); C22C 14/00 (2006.01); C22C 22/00 (2006.01)
CPC C22C 21/16 (2013.01) [C21D 8/0226 (2013.01); C21D 8/0236 (2013.01); C22C 14/00 (2013.01); C22C 22/00 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A refined Goss-grain aluminum alloy plate, consisting of the following compositions: 3.7-4.8 wt % of Cu, 1.2-1.7 wt % of Mg, 0.3-0.8 wt % of Mn, 0.03-0.10 wt % of Ti, and a balance of Al,
wherein the refined Goss-grain aluminum alloy plate has a Goss texture intensity of not less than 3.9; and
the refined Goss-grain aluminum alloy plate is prepared by a method comprising:
subjecting an Al—Cu—Mg alloy ingot to a homogenizing, a hot rolling at high temperature with a large deformation and a high final temperature, then directly to a cold rolling with a small or medium deformation, and then to a recrystallization and annealing treatment, a solid solution treatment, a water quenching, and a natural aging treatment, wherein,
the homogenizing is performed at a temperature of 470-505° C. for 24-96 hours;
the hot rolling at high temperature with a large deformation and a high final temperature is performed at a temperature of 465-495° C., with a rolling deformation of 80%-98% and a final temperature of not less than 380° C.;
the cold rolling with a small or medium deformation is performed directly after the hot rolling under a rolling deformation of a single-pass and a multi-pass cold rolling of 5% to 50%;
the recrystallization and annealing treatment is performed at a temperature of 300-450° C. for 60-300 minutes;
the solid solution treatment is performed at a temperature of 460-505° C. for 5-90 minutes, and quenched with water;
the natural aging treatment is performed at ambient temperature for at least 96 hours; and
the refined Goss-grain aluminum alloy plate has a Goss grain size of less than 100 μm.