Manufacturing Technology 2023, 23(6):861-869 | DOI: 10.21062/mft.2023.085

Evaluation of the Corrosion Resistance of the Al-Si-Cu-Mg Alloy with the Addition of Zirconium

Marek Matejka ORCID...1, Dana Bolibruchová ORCID...1, Daniel Kajánek ORCID...2
1 University of Zilina, Faculty of Mechanical Engineering, University of Zilina, Univerzitná 1, 010 26 ®ilina, Slovak Republic
2 Research Centre UNIZA, University of ®ilina, Univerzitná 1, 010 26 ®ilina, Slovak Republic

Aluminum alloys are one of the most used materials today, and therefore great emphasis is placed on their continuous development. Improving the ratio of strength and stiffness to weight, improving plasticity, casting properties or resistance to corrosion are examples of properties of aluminum alloys that are constantly being improved. This work focuses on the evaluation of the corrosion resistance of the Al-Si5Cu2Mg alloy with graded addition of zirconium (0.05; 0.10; 0.15; 0.20 wt.%). Corrosion re-sistance was evaluated based on immersion, exposure and potentiodynamic polarization tests. The addition of Zr to the AlSi5Cu2Mg alloy improved the thermodynamic stability in all evaluations. The application of heat treatment led to even more significant increases in corrosion resistance in almost all evaluations. Microscopic observation of the samples revealed mainly pitting corrosion along with intercrystalline corrosion.

Keywords: Al-Si-Cu-Mg alloys, Corrosion resistance, Zirconium
Grants and funding:

The article was created as part of the VEGA grant agency project: 1/0160/22. The authors thank the agency for their support

Received: August 11, 2023; Revised: October 29, 2023; Accepted: November 13, 2023; Prepublished online: November 27, 2023; Published: December 22, 2023  Show citation

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Matejka M, Bolibruchová D, Kajánek D. Evaluation of the Corrosion Resistance of the Al-Si-Cu-Mg Alloy with the Addition of Zirconium. Manufacturing Technology. 2023;23(6):861-869. doi: 10.21062/mft.2023.085.
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