公开(公告)号：US20230383386A1

公开(公告)日：2023-11-30

申请号：US18326421

申请日：2023-05-31

Applicant: Chongqing University

Inventor： Jun Tan ,  Guangming He ,  Chunhua Ran ,  Jijiang Liu ,  Boyan Huang ,  Yu Qi ,  Gang Ma ,  Zujiang Tang ,  Jianbo Li ,  Xianhua Chen ,  Bin Jiang ,  Fusheng Pan

IPC: C22C23/04 ,  C22C1/03 ,  B22D21/00 ,  C22B9/10 ,  C22F1/00 ,  C22F1/06

CPC classification number: C22C23/04 ,  C22C1/03 ,  B22D21/007 ,  C22B9/10 ,  C22F1/002 ,  C22F1/06

Abstract: A high strength cast magnesium alloy, relating to the technical field of magnesium alloy material preparation. The composition and mass percentage of cast magnesium alloy are: Zn 7.0%, Al 3.0%˜5.0%, Mn 0.3%˜0.5%, RE 0.5%˜1%, the total amount of unavoidable impurities is less than or equal to 0.04%, and the allowance is Mg, wherein the RE includes La and Ce, La and Ce account for 35% and 65% of the total amount of RE, respectively. Among them, Mn, La and Ce are added in the form of Mg-5 wt. % Mn, Mg-30 wt. % La and Mg-30 wt. % Ce intermediate alloys respectively. Then it is prepared through battering, melting, melt purification, pouring and heat treatment. By adding RE, the alloy melt can be purified, and the corrosion resistance and casting performance of the alloy can be increased. The tensile strength of the alloy is 300 MPa˜314 MPa, the elongation is 7%-13%, and the light rare earth content is low, the raw material and processing cost is low, and it is easy to realize mass production.