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A Promising New Class of High-Temperature Alloys: Eutectic High-Entropy Alloys
Open accessAbstract
High-entropy alloys (HEAs) can have either high strength or high ductility, and a simultaneous achievement of both still constitutes a tough challenge. The inferior castability and compositional segregation of HEAs are also obstacles for their technological applications. To tackle these problems, here we proposed a novel strategy to design HEAs using the eutectic alloy concept, i.e. to achieve a microstructure composed of alternating soft fcc and hard bcc phases. As a manifestation of this concept, an AlCoCrFeNi2.1 (atomic portion) eutectic high-entropy alloy (EHEA) was designed. The as-cast EHEA possessed a fine lamellar fcc/B2 microstructure, and showed an unprecedented combination of high tensile ductility and high fracture strength at room temperature. The excellent mechanical properties could be kept up to 700°C. This new alloy design strategy can be readily adapted to large-scale industrial production of HEAs with simultaneous high fracture strength and high ductility.
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Citations
Cites
Effect of valence electron concentration on stability of fcc or bcc phase in high entropy alloys
Guo, S., Ng, C., Lu, J., & Liu, C. T. (2011) · Journal of Applied Physics · doi:10.1063/1.3587228 · Cited by 2,911
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Cited by
Strong yet ductile nanolamellar high-entropy alloys by additive manufacturing
Ren, J., Zhang, Y., Zhao, D., Chen, Y., Guan, S., Liu, Y., Liu, L., Peng, S., Kong, F., Poplawsky, J. D., et al. (2022) · Nature · doi:10.1038/s41586-022-04914-8 · Cited by 747
Additive manufacturing of high entropy alloys: A practical review
Ostovari Moghaddam, A., Shaburova, N. A., Samodurova, M. N., Abdollahzadeh, A., & Trofimov, E. A. (2021) · Journal of Materials Science & Technology · doi:10.1016/j.jmst.2020.11.029 · Cited by 474
Sc–Zr–Nb–Rh–Pd and Sc–Zr–Nb–Ta–Rh–Pd High-Entropy Alloy Superconductors on a CsCl-Type Lattice
Stolze, K., Tao, J., von Rohr, F. O., Kong, T., & Cava, R. J. (2018) · Chemistry of Materials · doi:10.1021/acs.chemmater.7b04578 · Cited by 122
Cutting Edge of High-Entropy Alloy Superconductors from the Perspective of Materials Research
Kitagawa, J., Hamamoto, S., & Ishizu, N. (2020) · Metals · doi:10.3390/met10081078 · Cited by 109
High-entropy alloy superconductors on an α-Mn lattice
Stolze, K., Cevallos, F. A., Kong, T., & Cava, R. J. (2018) · Journal of Materials Chemistry C · doi:10.1039/c8tc03337d · Cited by 104
Metadata
- Authors
- Lu, Y., Dong, Y., Guo, S., Jiang, L., Kang, H., Wang, T., Wen, B., Wang, Z., Jie, J., Cao, Z., Ruan, H., & Li, T.
- Venue
- Scientific Reports
- Published
- 2014-08-27
- Volume
- 4
- Issue
- 1
- Pages
- 6200-6200
- ISSN
- 2045-2322 (ISSN-L)
- OpenAlex
- W2103109670
- Cited by
- 1,737
- References
- 1
- FWCI
- 43.63
- Type
- journal article
- Language
- en
- Open access
- gold
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- Lu, Y., Dong, Y., Guo, S., Jiang, L., Kang, H., Wang, T., Wen, B., Wang, Z., Jie, J., Cao, Z., Ruan, H., & Li, T. (2014). A Promising New Class of High-Temperature Alloys: Eutectic High-Entropy Alloys. Scientific Reports. https://doi.org/10.1038/srep06200
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