| 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 |
| Appears in Collections: | Journal/Magazine Article |
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