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Effects of zirconium addition on electrochemical and mechanical properties of Mg-3Zn-1Ca-1RE alloy

Seyed Mohammad Hossein Mousavian (Corrosion Engineering and Material Protection Group, Bandar Abbas Campus, Amirkabir University of Technology, Tehran, Iran)
Seyed Hadi Tabaian (Department of Materials and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran)
Mohammadhassan Badihehaghdam (Corrosion Engineering and Material Protection Group, Bandar Abbas Campus, Amirkabir University of Technology, Tehran, Iran)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 24 November 2020

Issue publication date: 4 December 2020

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Abstract

Purpose

The effect of zirconium, zinc, calcium and rare earth group as the alloying elements on mechanical properties and corrosion behavior of magnesium alloys was investigated in the simulated body fluid.

Design/methodology/approach

Pure magnesium and the alloying elements were melted and zirconium was finally added to obtain different alloys. The castings were annealed and some samples were aged heat treated. X-ray fluorescence was used for the elemental analysis and LSV was used for electrochemical corrosion evaluations.

Findings

Results showed that corrosion resistance decreases with increasing zirconium content. The lowest corrosion rate was obtained for the samples containing 0.3% and 0.45% of Zr from annealed and aging heat-treated samples, respectively. Yield stress enhances with increasing the zirconium content and degrades by the aging heat treatment.

Originality/value

These alloys were studied for the first time. Effect of casting without using protective flux and vacuum furnaces. Effect of annealing at 440°C for 2 h and artificial aging at 200°C for 16 h. Alloy’s electrochemical behavior on the body’s simulation environment has been investigated. Improvement of mechanical properties after annealing heat treatment by high zirconium percentage.

Keywords

Acknowledgements

The authors would like to acknowledge Dr. Seyed Mohammad H. Mirbagheri (Amirkabir University of Technology) for his scientific and technical assistance.

Citation

Mousavian, S.M.H., Tabaian, S.H. and Badihehaghdam, M. (2020), "Effects of zirconium addition on electrochemical and mechanical properties of Mg-3Zn-1Ca-1RE alloy", Anti-Corrosion Methods and Materials, Vol. 67 No. 6, pp. 583-591. https://doi.org/10.1108/ACMM-06-2020-2324

Publisher

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Emerald Publishing Limited

Copyright © 2020, Emerald Publishing Limited