Title:
PREPARATION METHOD FOR HIGH-TOUGHNESS CORROSION-RESISTANT AZ80 MAGNESIUM ALLOY
Document Type and Number:
WIPO Patent Application WO/2022/267488
Kind Code:
A1
Abstract:
The present invention relates to the technical field of magnesium alloys, and provides a preparation method for a high-toughness corrosion-resistant AZ80 magnesium alloy, comprising: carrying out jet atomization deposition treatment on an AZ80 magnesium alloy melt, and then sequentially carrying out homogenization treatment, equal channel angular pressing deformation and micro-arc oxidation treatment. According to the present invention, adopting the atomization deposition treatment avoids dendritic segregation and coarse structure of the alloy, and adopting the equal channel angular pressing deformation refines grains, such that the toughness of the material is improved, an ultrafine grain microstructure formed after the equal channel angular pressing deformation can improve the film forming process of micro-arc oxidation treatment, and the compactness of an oxide film on the surface of the alloy is improved. A ceramic layer is formed on the surface of the AZ80 magnesium alloy by using the micro-arc oxidation treatment, such that the corrosion resistance of the alloy is improved. The result of embodiments shows that the tensile strength of the AZ80 magnesium alloy provided by the present invention is 347 MPa, the tensile elongation at break is 12.5%, and the full immersion corrosion rate is 3.5×10-4mg•cm-2h-1.
Inventors:
TANG LINGLING (CN)
WANG NAN (CN)
GUO MENG (CN)
FU JIALIN (CN)
HAN ZHENYI (CN)
WANG NAN (CN)
GUO MENG (CN)
FU JIALIN (CN)
HAN ZHENYI (CN)
Application Number:
PCT/CN2022/075860
Publication Date:
December 29, 2022
Filing Date:
February 10, 2022
Export Citation:
Assignee:
UNIV JIANGSU (CN)
International Classes:
C22C23/04; B21C23/01; C25D11/30
Foreign References:
| CN113462911A | 2021-10-01 | |||
| CN101406906A | 2009-04-15 | |||
| CN102560302A | 2012-07-11 | |||
| CN111593244A | 2020-08-28 | |||
| CN106544609A | 2017-03-29 | |||
| JP2020050948A | 2020-04-02 |
Attorney, Agent or Firm:
NANJING DOYES INTELLECTUAL PROPERTY CO., LTD. (CN)
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