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

A.V. Koltygin; V.E. Bazhenov; I.V. Plisetskaya; V.A. Bautin; A.I. Bazlov; N.Y. Tabachkova; O.O. Voropaeva; A.A. Komissarov; V.D. Belov

doi:10.1007/s12613-021-2369-0

Volume 29 Issue 9

Sep. 2022

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2022 > 29(9): 1733-1745

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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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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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

1)
Foundry Department, National University of Science and Technology (MISiS), Moscow 119049, Russia
2)
Department of Metallurgy Steel, New Production Technologies and Protection of Metals, National University of Science and Technology (MISiS), Moscow 119049, Russia
3)
Laboratory of Advanced Green Materials, National University of Science and Technology (MISiS), Moscow 119049, Russia
4)
Department of Materials Science of Semiconductors and Dielectrics, National University of Science and Technology (MISiS), Moscow 119049, Russia
5)
Fianit Laboratory (Laser Materials and Technology Research Center at GPI), Prokhorov General Physics Institute RAS, Moscow 119991, Russia
6)
Laboratory of Hybrid Nanostructured Materials, National University of Science and Technology (MISiS), Moscow 119049, Russia
7)
Laboratory of Medical Bioresorption and Bioresistance, Moscow State University of Medicine and Dentistry, Moscow 127473, Russia

Corresponding author:
V.E. Bazhenov E-mail: v.e.bagenov@gmail.com
Received: 12 May 2021; Revised: 22 October 2021; Accepted: 25 October 2021; Available online: 26 October 2021

Abstract

Abstract

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.
- magnesium alloy;
- Mg–Zn–Cu;
- casting alloy;
- Mn addition;
- Zr addition

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