Influence of Oxide Dispersions (Al2O3, TiO2, and Y2O3) in CrFeCuMnNi High-Entropy Alloy on Microstructural Changes and Corrosion Resistance
نویسندگان
چکیده
This study investigates the influence of 3 vol.% Al2O3, TiO2, and Y2O3 in CrFeCuMnNi equimolar high-entropy alloy on its microstructural changes corrosion resistance. These oxide-dispersed composites (ODS-HECs) were synthesized via high-energy ball milling (50 h) followed by uniaxial hot-compaction (550 MPa, 45 min), medium-frequency sintering (1100 °C, 20 hot forging MPa). The microstructures developed produced a stable FCC phase, small amount ordered BCC-B2 structure, Fe2O3, corresponding dispersed oxide phases. was tested 3.5% NaCl solution using several electrochemical techniques. results revealed that rate (RCorr) decreased with incorporation particles. Among investigated samples based impedance spectroscopy results, CrFeCuMnNi-3 TiO2 ODS-HECs seen to possess highest value resistance (RP). change chronoamperometric current time indicated suffered pitting which when Al2O3 added, forming sample. In contrast, Y2O3, vol. prevents pitting.
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ژورنال
عنوان ژورنال: Crystals
سال: 2023
ISSN: ['2073-4352']
DOI: https://doi.org/10.3390/cryst13040605