Corrosion of Eutectic High-Entropy Alloys: A Review
High-entropy alloys (HEAs) are emerging as a new family of alloys with equal/near-equal amounts of constituting elements and outstanding properties. In particular, eutectic high-entropy alloys (EHEAs) with alternate lamella phases possess both high strength and ductility, offering the advantage of c...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/13/8/1231 |
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| author | Kaiyang Li Yunlong Zhai Minjie Lai Min Song Shanfang Zou Guojie Huang Khurram Yaqoob Zhangwei Wang Naiqiang Zhang |
| author_facet | Kaiyang Li Yunlong Zhai Minjie Lai Min Song Shanfang Zou Guojie Huang Khurram Yaqoob Zhangwei Wang Naiqiang Zhang |
| author_sort | Kaiyang Li |
| collection | DOAJ |
| description | High-entropy alloys (HEAs) are emerging as a new family of alloys with equal/near-equal amounts of constituting elements and outstanding properties. In particular, eutectic high-entropy alloys (EHEAs) with alternate lamella phases possess both high strength and ductility, offering the advantage of conquering the strength–ductility trade-off that could hardly be achieved by conventional alloys. While the mechanical behavior of EHEAs has been widely studied, the corrosion behavior is still not fully understood. Furthermore, the environment-induced degradation could largely decide the service life of EHEA as engineering alloys, and the eutectic structure may have a special influence on the corrosion process. This article systematically reviews the corrosion studies of EHEAs by pointing out the structural features of EHEAs, summarizing the general corrosion issues for EHEAs and identifying the specific corrosion performance of different EHEA systems. It is found that EHEAs feature micro-galvanic corrosion due to their eutectic crystal structure, and such a corrosion mode is further affected by testing time, heat treatment, temperature, and applied potential. All the corrosion-affecting factors are summarized, and future research directions are suggested, aiming at ensuring the wide engineering application of EHEAs with both high strength–ductility and corrosion resistance. |
| first_indexed | 2024-03-11T00:01:38Z |
| format | Article |
| id | doaj.art-c657234a64a646bda2bf94826b20a9c8 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-11T00:01:38Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-c657234a64a646bda2bf94826b20a9c82023-11-19T00:45:15ZengMDPI AGCrystals2073-43522023-08-01138123110.3390/cryst13081231Corrosion of Eutectic High-Entropy Alloys: A ReviewKaiyang Li0Yunlong Zhai1Minjie Lai2Min Song3Shanfang Zou4Guojie Huang5Khurram Yaqoob6Zhangwei Wang7Naiqiang Zhang8School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, ChinaSchool of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaOptimal Material Technology Co., Ltd., Chengdu 610000, ChinaChina Nonferrous Metals Innovation Institute (Tianjin) Co., Ltd., No.86, Ziguang Road Automotive Industrial Area, Xiqing District, Tianjin 300393, ChinaSchool of Chemical and Materials Engineering, National University of Sciences and Technology, H-12, Islamabad 44000, PakistanState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, ChinaSchool of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, ChinaHigh-entropy alloys (HEAs) are emerging as a new family of alloys with equal/near-equal amounts of constituting elements and outstanding properties. In particular, eutectic high-entropy alloys (EHEAs) with alternate lamella phases possess both high strength and ductility, offering the advantage of conquering the strength–ductility trade-off that could hardly be achieved by conventional alloys. While the mechanical behavior of EHEAs has been widely studied, the corrosion behavior is still not fully understood. Furthermore, the environment-induced degradation could largely decide the service life of EHEA as engineering alloys, and the eutectic structure may have a special influence on the corrosion process. This article systematically reviews the corrosion studies of EHEAs by pointing out the structural features of EHEAs, summarizing the general corrosion issues for EHEAs and identifying the specific corrosion performance of different EHEA systems. It is found that EHEAs feature micro-galvanic corrosion due to their eutectic crystal structure, and such a corrosion mode is further affected by testing time, heat treatment, temperature, and applied potential. All the corrosion-affecting factors are summarized, and future research directions are suggested, aiming at ensuring the wide engineering application of EHEAs with both high strength–ductility and corrosion resistance.https://www.mdpi.com/2073-4352/13/8/1231eutectic high-entropy alloycorrosiongalvanic corrosionpassive film |
| spellingShingle | Kaiyang Li Yunlong Zhai Minjie Lai Min Song Shanfang Zou Guojie Huang Khurram Yaqoob Zhangwei Wang Naiqiang Zhang Corrosion of Eutectic High-Entropy Alloys: A Review Crystals eutectic high-entropy alloy corrosion galvanic corrosion passive film |
| title | Corrosion of Eutectic High-Entropy Alloys: A Review |
| title_full | Corrosion of Eutectic High-Entropy Alloys: A Review |
| title_fullStr | Corrosion of Eutectic High-Entropy Alloys: A Review |
| title_full_unstemmed | Corrosion of Eutectic High-Entropy Alloys: A Review |
| title_short | Corrosion of Eutectic High-Entropy Alloys: A Review |
| title_sort | corrosion of eutectic high entropy alloys a review |
| topic | eutectic high-entropy alloy corrosion galvanic corrosion passive film |
| url | https://www.mdpi.com/2073-4352/13/8/1231 |
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