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Heat-Treatment Induced Phase Stability and High-Temperature Corrosion Behavior of AlCrFeCuNi-NbX High Entropy Alloy

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Abstract:

This research investigates the impact of heat treatment and high-temperature oxidation on the phase transformation and performance of AlCrFeCuNi-Nb high-entropy alloys (HEAs). The alloys were produced using laser deposition and methodically heat-treated to enhance their structural stability. X-ray diffraction (XRD) was employed for phase analysis to examine phase alterations resulting from Nb addition and thermal exposure. Results indicate that Nb boosts phase stability, facilitates the production of protective oxide layers, and increases resistance to high-temperature oxidation. The enhanced alloy demonstrated exceptional oxidation resistance and mechanical properties. These findings underscore the promise of Nb-doped HEAs for engineering applications that necessitate resilient, high-performance materials capable of enduring harsh temperatures and corrosive conditions.

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Periodical:

Materials Science Forum (Volume 1181)

Pages:

25-31

DOI:

https://doi.org/10.4028/p-oi9GEM

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Online since:

March 2026

Authors:

Lehlogonolo Rudolf Kanyane*, Nicholas Malatji, Mbongeni Tlou, Mxolisi Brendon Shongwe

Keywords:

Heat-Treatment (HT), High Entropy Alloys (HEAs), Hot Corrosion

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] Gromov, V.E.e., et al., Structure and properties of high-entropy alloys. 2021: Springer.

Google Scholar

[2] Khan, M.A., et al., Thermodynamic, phase diagram, and high-entropy alloys system: Basic concepts, in High-Entropy Alloys. 2024, Elsevier. pp.7-29.

DOI: 10.1016/b978-0-443-22142-2.00002-8

Google Scholar

[3] Oketola, A.M., et al., Advances in High-Entropy Alloy Research: Unraveling Fabrication Techniques, Microstructural Transformations, and Mechanical Properties. Journal of Bio-and Tribo-Corrosion, 2025. 11(3): p.79.

DOI: 10.1007/s40735-025-00999-6

Google Scholar

[4] Modikwe, T.P., Characterisation and surface finish evaluation of Direct Energy Deposited AlCoCrCuFeNi High Entropy Alloys. 2024.

Google Scholar

[5] Onawale, O.T., Studies on the Mechanical Properties and Corrosion Behaviour of Al20Be20Fe10Si15Ti35 High Entropy Alloy Produced by Mechanical Alloying and SPS Sintering. 2022, Vaal University of Technology (South Africa).

Google Scholar

[6] Gupta, A.K., et al., Advances in nickel-containing high-entropy alloys: from fundamentals to additive manufacturing. Materials, 2024. 17(15): p.3826.

DOI: 10.3390/ma17153826

Google Scholar

[7] Chen, W., et al., The effect of Nb element on microstructure and properties of CoCuFeMnNbxNi High-Entropy Alloys. Materials Science and Engineering: A, 2025: p.149099.

Google Scholar

[8] Lei, H., et al., Synergistic effect of Nb and W alloying on the microstructure and mechanical properties of CoCrFeNi high entropy alloys. Journal of Materials Research and Technology, 2024. 28: pp.3765-3774.

DOI: 10.1016/j.jmrt.2024.01.003

Google Scholar

[9] Wang, Y., et al., A review of additive manufacturing heat-resistant aluminum alloys: Materials, properties and strengthening strategies at high temperature. International Materials Reviews, 2025: p.09506608251369181.

DOI: 10.1177/09506608251369181

Google Scholar

[10] Li, Y., et al., Effects of Nb addition on the damping capacity and mechanical properties of NbxCoCrFeNi2Al0. 3 high-entropy alloys. Intermetallics, 2025. 185: p.108901.

DOI: 10.1016/j.intermet.2025.108901

Google Scholar

[11] Zheng, H., et al., Study on mechanical response and penetration mechanism of lightweight BCC high-entropy alloy (Ti2Zr) 1.5 NbVAl0. 5 under extreme dynamic loads. Intermetallics, 2025. 186: p.108966.

DOI: 10.1016/j.intermet.2025.108966

Google Scholar

[12] Mohan, M., et al., Microstructural Features, Corrosion and Wear Behavior of the AlCrFeCoNiCu High-Entropy Alloy, Electrodeposited Coatings, and Subsequent Heat Treatment. Journal of Materials Engineering and Performance, 2024: pp.1-19.

DOI: 10.1007/s11665-024-10187-1

Google Scholar

[13] Zhang, Y., et al., Anti-corrosion coatings for protecting Nb-based alloys exposed to oxidation environments: a review. Metals and Materials International, 2023. 29(1): pp.1-17.

DOI: 10.1007/s12540-022-01222-8

Google Scholar

[14] Ji, P., et al., Effect of Nb addition on the stability and biological corrosion resistance of Ti-Zr alloy passivation films. Corrosion Science, 2020. 170: p.108696.

DOI: 10.1016/j.corsci.2020.108696

Google Scholar

[15] Park, J.-Y., et al., Corrosion behavior of Zr alloys with a high Nb content. Journal of nuclear materials, 2005. 340(2-3): pp.237-246.

DOI: 10.1016/j.jnucmat.2004.12.003

Google Scholar