Study of Microstructure, Phase Composition and Oxidation Resistance of High-Entropy Alloys Al0.25CoCrFeNi and Al0.25CoCrFeNiCuAgx (x = 0, 0.1, 0.2)

—The microstructure, phase composition, and oxidation resistance of as-cast high-entropy alloys (HEAs) Al 0.25 CoCrFeNi and Al 0.25 CoCrFeNiCuAg x ( x = 0, 0.1, 0.2) have been studied. Oxidation was carried out at 700°C for 50 h in air. During the experiment, curves for the dependence of the specifi...

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Veröffentlicht in:Inorganic materials : applied research 2024-08, Vol.15 (4), p.1091-1099
Hauptverfasser: Samoilova, O. V., Suleymanova, I. I., Shaburova, N. A., Trofimov, E. A.
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Sprache:eng
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Zusammenfassung:—The microstructure, phase composition, and oxidation resistance of as-cast high-entropy alloys (HEAs) Al 0.25 CoCrFeNi and Al 0.25 CoCrFeNiCuAg x ( x = 0, 0.1, 0.2) have been studied. Oxidation was carried out at 700°C for 50 h in air. During the experiment, curves for the dependence of the specific weight gain on the exposure time were plotted. It has been shown that the introduction of copper has a slight effect on the resistance of the base Al 0.25 CoCrFeNi HEA to oxidation, while additional (to copper) alloying with silver worsens the resistance of the samples to high-temperature gas corrosion.
ISSN:2075-1133
2075-115X
DOI:10.1134/S2075113324700643