Improvement of microstructure and corrosion properties of friction stir welded AA5754 by adding Zn interlayer

Ali Shamsipur; Amir Anvari; Ahmad Keyvani

doi:10.1007/s12613-018-1646-z

Volume 25 Issue 8

Aug. 2018

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2018 > 25(8): 967-973

Ali Shamsipur, Amir Anvari, and Ahmad Keyvani, Improvement of microstructure and corrosion properties of friction stir welded AA5754 by adding Zn interlayer, Int. J. Miner. Metall. Mater., 25(2018), No. 8, pp. 967-973. https://doi.org/10.1007/s12613-018-1646-z

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Ali Shamsipur, Amir Anvari, and Ahmad Keyvani, Improvement of microstructure and corrosion properties of friction stir welded AA5754 by adding Zn interlayer, Int. J. Miner. Metall. Mater., 25(2018), No. 8, pp. 967-973. https://doi.org/10.1007/s12613-018-1646-z

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Research Article

Improvement of microstructure and corrosion properties of friction stir welded AA5754 by adding Zn interlayer

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Corresponding author:
Ali Shamsipur E-mail: Shamsipur@aut.ac.ir
Received: 20 January 2018; Revised: 10 March 2018; Accepted: 20 March 2018

Abstract

Abstract

This study investigated the effect of Zn foil layers on the microstructure and corrosion characteristics of friction stir welded aluminum alloy 5754. Samples of various joints were prepared by applying different rotational and welding speeds, and their microstructures were evaluated via a metallographic technique and scanning electron microscopy equipped with energy-dispersive X-ray spectroscopy elemental analysis. The anticorrosion behavior of joints in the absence and presence of a Zn interlayer was studied by cyclic potentiodynamic polarization test in 3.5wt% NaCl aqueous solution, and sound welds were obtained in the presence of the Zn interlayer foil. The results revealed that the joint made at a rotational speed of 800 r/min and traveling speed of 15 mm/min achieved a chemical composition identical to that of aluminum alloy 7xxx series, and as such, it showed the best resistance to corrosion.
- friction stir welding;
- AA5754 aluminum alloy;
- zinc interlayer;
- microstructure;
- corrosion resistance

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References

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