Title:
LPSO PHASE FORTIFIED HIGH-DAMPING RARE EARTH MAGNESIUM ALLOY AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/088612
Kind Code:
A1
Abstract:
Disclosed are an LPSO phase fortified high-damping rare earth magnesium alloy and a preparation method therefor. The magnesium alloy comprises, in weight percent, 2.7-3.8% of rare earth elements, 0.8-1.5% of Zn, 0.5-1.0% of Mn, and the balance being Mg. The magnesium alloy comprises an LPSO phase having a special long period structure. The LPSO phase can enhance damping performance of the alloy while increasing comprehensive mechanical properties thereof, thus offering a tough and high-damping rare earth magnesium alloy. The LPSO phase fortified high-damping rare earth magnesium alloy is prepared by a method in which a semi-continuous casting process is employed. The rare earth magnesium alloy obtained has high mechanical properties and high damping performance, with a tensile strength of 180 MPa or higher, an elongation rate of 10% or higher and a damping value of 0.065 or higher. The magnesium alloy boasts a high product yield rate and a good machining and forming properties, is easy to industrialize, and can be widely used in sound transmission apparatuses, such as speakers and earpieces.
Inventors:
FANG DAQING (CN)
ZHANG XIAORU (CN)
ZHOU YUMEI (CN)
FU WEI (CN)
DING XIANGDONG (CN)
SUN JUN (CN)
YANG JUN (CN)
LIU PENG (CN)
ZHANG XIAORU (CN)
ZHOU YUMEI (CN)
FU WEI (CN)
DING XIANGDONG (CN)
SUN JUN (CN)
YANG JUN (CN)
LIU PENG (CN)
Application Number:
PCT/CN2020/121107
Publication Date:
May 14, 2021
Filing Date:
October 15, 2020
Export Citation:
Assignee:
UNIV XI AN JIAOTONG (CN)
International Classes:
C22C23/06; C22C1/03; C22C1/06
Foreign References:
| CN110629090A | 2019-12-31 | |||
| KR20190098880A | 2019-08-23 | |||
| KR20190098880A | 2019-08-23 | |||
| CN101805864A | 2010-08-18 | |||
| CN106521278A | 2017-03-22 |
Attorney, Agent or Firm:
XI'AN TONG DA PATENT AGENCY CO., LTD. (CN)
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