BEHAVIOUR OF THE AlCoCr0.5NiY0.1 MULTI-PRINCIPAL ELEMENT ALLOY AT 1100°C

Olga Samoilova, Svetlana Pratskova, Arman S. Bilgenov, Natalja Shaburova, Evgeny Alekseevich Trofimov, Sergey Nikolaevich Lezhnev, Evgeniy Panin

2026

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DOI 10.59957/jctm.v61.i5.2026.16

Data confidence 70 medium

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Abstract

The microstructure and phase composition of cast AlCoCr0.5NiY0.1 multi-principal element alloy (MPEA) have been determined. High-temperature oxidation of the alloy under study was carried out at 1100°C for 100 h in an atmospheric atmosphere. The high resistance of this MPEA to high-temperature gas corrosion is shown, the parabolic oxidation rate constant was kp = 9.48 × 10-13 g2 cm-4 s-1. It has been established that the introduction of yttrium is an effective way to increase the heat resistance of multi-principal element alloys.