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Volume 29 Issue 9
Sep.  2022

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A.V. Koltygin, V.E. Bazhenov, I.V. Plisetskaya, V.A. Bautin, A.I. Bazlov, N.Y. Tabachkova, O.O. Voropaeva, A.A. Komissarov, and V.D. Belov, Influence of Zr and Mn additions on microstructure and properties of Mg–2.5wt%Cu–Xwt%Zn (X = 2.5, 5 and 6.5) alloys, Int. J. Miner. Metall. Mater., 29(2022), No. 9, pp. 1733-1745. https://doi.org/10.1007/s12613-021-2369-0
Cite this article as:
A.V. Koltygin, V.E. Bazhenov, I.V. Plisetskaya, V.A. Bautin, A.I. Bazlov, N.Y. Tabachkova, O.O. Voropaeva, A.A. Komissarov, and V.D. Belov, Influence of Zr and Mn additions on microstructure and properties of Mg–2.5wt%Cu–Xwt%Zn (X = 2.5, 5 and 6.5) alloys, Int. J. Miner. Metall. Mater., 29(2022), No. 9, pp. 1733-1745. https://doi.org/10.1007/s12613-021-2369-0
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研究论文

添加Zr和Mn对Mg2.5wt%Cu–Xwt%Zn (X = 2.5、5和6.5)合金组织和性能的影响

  • 通讯作者:

    V.E. Bazhenov    E-mail: v.e.bagenov@gmail.com

  • 本工作研究了添加量小于1wt%的Zr和Mn对含2.5wt% Cu和2.5wt%–6.5wt% Zn的Mg–Zn–Cu合金的显微组织、力学性能、铸造性能和耐腐蚀性能的影响。通过对硬度和电导率的测量研究,找出具有最佳力学性能的最佳热处理方案。研究表明,由于Zr具有较强的晶粒细化效应,使得合金的屈服强度显著提高。然而,Mn和Zr的存在对合金的断裂伸长率有不利影响。研究结果表明,合金结构中Mg2Cu阴极相的析出对腐蚀行为产生了负面影响。然而,添加Mn降低了所研究合金的腐蚀速率。当铜含量为2.5wt%,锌含量为5wt%时,合金的力学性能、铸造性能和腐蚀性能得到了最佳的组合。而Mn或Zr的添加可以改善合金的性能;例如,添加Mn或Zr会增加合金的流动性。
  • Research Article

    Influence of Zr and Mn additions on microstructure and properties of Mg–2.5wt%Cu–Xwt%Zn (X = 2.5, 5 and 6.5) alloys

    + Author Affiliations
    • This work studied the effects of adding Zr and Mn in amounts less than 1wt% on the microstructure, mechanical properties, casting properties, and corrosion resistance of Mg–Zn–Cu alloys containing 2.5wt% Cu and 2.5wt%–6.5wt% Zn. The hardness and electrical conductivity measurements were used to find an optimal heat treatment schedule with the best mechanical properties. It has been established that Zr significantly increases the yield strength of the alloys due to a strong grain refinement effect. However, the presence of Mn and Zr has a detrimental effect on alloy’s elongation at fracture. It was shown that the precipitation of the Mg2Cu cathodic phase in the alloy structure negatively affects the corrosion behavior. Nevertheless, the addition of Mn decreases the corrosion rate of the investigated alloys. The best combination of the mechanical, casting, and corrosion properties were achieved in the alloys containing 2.5wt% Cu and 5wt% Zn. However, the Mn or Zr addition can improve the properties of the alloys; for example, the addition of Mn or Zr increases the fluidity of the alloys.
    • loading
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