Title:
RARE EARTH MAGNESIUM ALLOY HAVING HIGH PLASTIC DEFORMATION AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/088611
Kind Code:
A1
Abstract:
Disclosed are a rare earth magnesium alloy having high plastic deformation and a preparation method therefor. The weight percentage content of the magnesium alloy is: rare earth element: 2.7-3.8%, Zn: 0.2-3%, and Mn: 0.5-1.0%, the rest being Mg. The grain size of the magnesium alloy is within the range of 7.5-8.5 μm, and said grains have a free grain orientation. The alloy exhibits weak texture, and the strain coordination effect of the alloy can be efficiently exhibited in a plastic deformation process so as to attain the characteristic of high plastic deformation. A preparation method for the described magnesium alloy employs reasonable heating melting, semi-continuous casting, homogenization treatment, and extrusion processing. During the deformation process, complete dynamic recrystallization occurs to obtain a uniform, fine equiaxed crystal structure, and a rare earth magnesium alloy having high plastic deformation and an elongation of 31%-34% is obtained. The yield of the described magnesium alloy is high, processability and moldability are good, and industrialization is easily achieved. Moreover, the rare earth magnesium alloy having high plastic deformation in the present invention can be widely applied to non-load bearing parts in vehicles such as mountain bikes, automobiles, airplanes, and high-speed railways.
Inventors:
FANG DAQING (CN)
ZHANG XIAORU (CN)
ZAI WEI (CN)
LI SUZHI (CN)
DING XIANGDONG (CN)
SUN JUN (CN)
YANG JUN (CN)
LIU PENG (CN)
ZHANG XIAORU (CN)
ZAI WEI (CN)
LI SUZHI (CN)
DING XIANGDONG (CN)
SUN JUN (CN)
YANG JUN (CN)
LIU PENG (CN)
Application Number:
PCT/CN2020/121106
Publication Date:
May 14, 2021
Filing Date:
October 15, 2020
Export Citation:
Assignee:
UNIV XI AN JIAOTONG (CN)
International Classes:
C22C1/03; B21C23/00; B22D7/00; B22D11/00; C22C23/04; C22C23/06; C22F1/06
Domestic Patent References:
| WO2017035072A1 | 2017-03-02 |
Foreign References:
| CN110699562A | 2020-01-17 |
Other References:
TAHREEN N., ZHANG D.F., PAN F.S., JIANG X.Q., LI C., LI D.Y., CHEN D.L.: "Influence of yttrium content on phase formation and strain hardening behavior of Mg-Zn-Mn magnesium alloy", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 615, 5 December 2014 (2014-12-05), pages 424 - 432, XP055811361, ISSN: 0925-8388, DOI: 10.1016/j.jallcom.2014.06.211
PARK SUNG HYUK; YOU BONG SUN; MISHRA RAJA K.; SACHDEV ANIL K.: "Effects of extrusion parameters on the microstructure and mechanical properties of Mg–Zn–(Mn)–Ce/Gd alloys", MATERIALS SCIENCE & ENGINEERING A, vol. 598, 26 March 2014 (2014-03-26), pages 396 - 406, XP028661854, ISSN: 0921-5093, DOI: 10.1016/j.msea.2014.01.051
PARK SUNG HYUK; YOU BONG SUN; MISHRA RAJA K.; SACHDEV ANIL K.: "Effects of extrusion parameters on the microstructure and mechanical properties of Mg–Zn–(Mn)–Ce/Gd alloys", MATERIALS SCIENCE & ENGINEERING A, vol. 598, 26 March 2014 (2014-03-26), pages 396 - 406, XP028661854, ISSN: 0921-5093, DOI: 10.1016/j.msea.2014.01.051
Attorney, Agent or Firm:
XI'AN TONG DA PATENT AGENCY CO., LTD. (CN)
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