公开(公告)号：US11952645B2

公开(公告)日：2024-04-09

申请号：US17865542

申请日：2022-07-15

申请人： Central South University ,  Changsha Xingxiao Material Technology Co., Ltd.

发明人： Zhiyi Liu ,  Fei Liu ,  Guangyu He

IPC分类号： C22C21/16 ,  C21D8/02 ,  C22C14/00 ,  C22C22/00

CPC分类号： C22C21/16 ,  C21D8/0226 ,  C21D8/0236 ,  C22C14/00 ,  C22C22/00

摘要： Provided is a refined Goss-grain aluminum alloy plate and a preparation method thereof. The refined Goss-grain aluminum alloy plate includes 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 the balance of Al. The refined Goss-grain aluminum alloy plate is prepared by a method including subjecting an Al—Cu—Mg alloy ingot with a certain composition to a homogenizing at a temperature of 470-505° C., a hot rolling at high temperature of 465-495° C. with a large deformation of 80%-98% and a high final temperature, then directly to a cold rolling with a small or medium deformation of 5% to 50%, and then to a recrystallization and annealing treatment at a temperature of 300-450° C., a solid solution treatment at a temperature of 460-505° C., and a natural aging treatment for at least 96 hours.

公开(公告)号：US11255008B2

公开(公告)日：2022-02-22

申请号：US16896797

申请日：2020-06-09

申请人： Central South University

发明人： Zhiyi Liu ,  Ye Chen ,  Jian Wang ,  Jing Cao ,  Song Bai

IPC分类号： C22F1/057 ,  C21D1/18 ,  C21D1/26 ,  C21D8/02 ,  C21D9/46 ,  C22C21/16 ,  C21D1/78

摘要： The present invention discloses a method for processing a highly alloyed aluminum alloy sheet with a high rolling yield, including the steps of cold rolling and hot rolling of an alloy sheet followed by heat treatment. The highly alloyed Al—Cu—Mg—Ag alloy sheet is subjected to short-time solution treatment and quenching at high temperature for multiple times by increasing the solution treatment temperature and shortening the solution treatment time. In this way, the mechanical properties of the alloy at room temperature and high temperature match with or even exceed those of a conventional alloy subjected to long-time solution treatment at high temperature. The present invention implements multiple times of short-time continuous solution treatment and quenching of a highly-alloyed coiled aluminum alloy sheet. This prevents a large amount of scraps caused by the conventional processes of segmented solution treatment and quenching of the coiled material and stretching straightening treatment.