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Title: Synergistic effects of Al and Ti on the oxidation behaviour and mechanical properties of L12-strengthened FeCoCrNi high-entropy alloys
Authors: Ding, ZY 
Cao, BX
Luan, JH
Jiao, ZB 
Issue Date: 15-May-2021
Source: Corrosion science, 15 May 2021, v. 184, 109365
Abstract: Synergistic effects of Al and Ti on the oxidation behaviour and mechanical properties of FeCoCrNi high-entropy alloys were systematically investigated. Our results reveal that increasing the Al/Ti ratio slows down the oxidation kinetics at 700−900 °C and changes the oxide scale from TiO2 and spinel oxides to Cr2O3 and Al2O3, leading to a substantial improvement of oxidation resistance. From a mechanical aspect, however, increasing the Al/Ti ratio decreases the mechanical strength, demonstrating a strong trade-off between oxidation resistance and mechanical properties. The underlying mechanisms for the Al and Ti effects on the oxidation resistance and mechanical properties were discussed.
Keywords: High-entropy alloy
Mechanical property
Oxidation
Oxide scale microstructure
Precipitate
Publisher: Pergamon Press
Journal: Corrosion science 
ISSN: 0010-938X
DOI: 10.1016/j.corsci.2021.109365
Rights: © 2021 Elsevier Ltd. All rights reserved.
© 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.
The following publication Ding, Z. Y., Cao, B. X., Luan, J. H., & Jiao, Z. B. (2021). Synergistic effects of Al and Ti on the oxidation behaviour and mechanical properties of L12-strengthened FeCoCrNi high-entropy alloys. Corrosion Science, 184, 109365 is available at https://dx.doi.org/10.1016/j.corsci.2021.109365.
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