Effect of Heat Treatment on the Microstructure and Corrosion Resistance of Al0.75CoCr1.25FeNi High-Entropy Alloys
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Microstructure of Al0.75CoCr1.25FeNi HEA
3.2. Effect of Heat Treatment on Corrossion Resistance of Al0.75CoCr1.25FeNi HEA
3.3. Corrosion Mechanism
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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HEAs | As-Cast | 600 °C HT | 800 °C HT | 1000 °C HT |
---|---|---|---|---|
Ecorr/mV vs. SCE | −217.6 | −274.2 | −230.7 | −251.2 |
icorr/A∙cm−2 | 1.12 × 10−8 | 7.81 × 10−9 | 8.96 × 10−9 | 9.41 × 10−9 |
V/mm∙a−1 | 1.13 × 10−10 | 7.87 × 10−11 | 9.02 × 10−11 | 9.48 × 10−11 |
Epit/mV vs. SCE | 186.7 | 35.3 | 181.2 | 160.8 |
Epass/mV vs. SCE | −135.2 | −192.4 | −150.2 | −170.6 |
HEAs | As-Cast | 600 °C HT | 800 °C HT | 1000 °C HT |
---|---|---|---|---|
Rs/Ω·cm2 | 7.16 | 10.76 | 12.57 | 15.96 |
Rp/Ω·cm2 | 2.39 × 105 | 2.48 × 105 | 5.98 × 105 | 7.30 × 105 |
Qp/Ω−1·cm−2∙s−n | 2.76 × 10−5 | 1.59 × 10−5 | 1.06 × 10−5 | 1.83 × 10−4 |
n | 0.93 | 0.90 | 0.92 | 0.88 |
HEAs | As-Cast | 600 °C HT | 800 °C HT | 1000 °C HT |
---|---|---|---|---|
ND | 1.46 × 1020 | 1.52 × 1020 | 1.29 × 1020 | 9.93 × 1019 |
NA | 1.36 × 1020 | 1.46 × 1020 | 1.03 × 1020 | 8.65 × 1019 |
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Han, J.; Zhang, H.; Yuan, H.; Zhuo, X.; Cai, X.; Qiao, Y. Effect of Heat Treatment on the Microstructure and Corrosion Resistance of Al0.75CoCr1.25FeNi High-Entropy Alloys. Metals 2024, 14, 1010. https://doi.org/10.3390/met14091010
Han J, Zhang H, Yuan H, Zhuo X, Cai X, Qiao Y. Effect of Heat Treatment on the Microstructure and Corrosion Resistance of Al0.75CoCr1.25FeNi High-Entropy Alloys. Metals. 2024; 14(9):1010. https://doi.org/10.3390/met14091010
Chicago/Turabian StyleHan, Jianyang, Huan Zhang, Hongtao Yuan, Xiaoru Zhuo, Xiang Cai, and Yanxin Qiao. 2024. "Effect of Heat Treatment on the Microstructure and Corrosion Resistance of Al0.75CoCr1.25FeNi High-Entropy Alloys" Metals 14, no. 9: 1010. https://doi.org/10.3390/met14091010