High-temperature oxidation behaviour of AlxFeCrCoNi and AlTiVCr compositionally complex alloys
Compositionally complex alloys (CCAs), also termed as high entropy alloys (HEAs) or multi-principal element alloys (MPEAs), are being considered as a potential solution for many energy-related applications comprising extreme environments and temperatures. Herein, a review of the pertinent literature...
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| Format: | Article |
| Language: | English |
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Springer Science and Business Media LLC
2021
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| Online Access: | https://hdl.handle.net/1721.1/131078 |
| _version_ | 1826214082033745920 |
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| author | Esmaily, Mohsen Qiu, Yao Bigdeli, Sedigheh Venkataraman, Mahesh B. Allanore, Antoine Birbilis, Nick |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Esmaily, Mohsen Qiu, Yao Bigdeli, Sedigheh Venkataraman, Mahesh B. Allanore, Antoine Birbilis, Nick |
| author_sort | Esmaily, Mohsen |
| collection | MIT |
| description | Compositionally complex alloys (CCAs), also termed as high entropy alloys (HEAs) or multi-principal element alloys (MPEAs), are being considered as a potential solution for many energy-related applications comprising extreme environments and temperatures. Herein, a review of the pertinent literature is performed in conjunction with original works characterising the oxidation behaviour of two diverse Al-containing alloys; namely a lightweight (5.06 g/cm[superscript 3] single-phase AlTiVCr CCA and a multiple-phase Al[subscript 0.9]FeCrCoNi CCA (6.9[superscript 3]). The thermogravimetric results obtained during oxidation of the alloys at 700 and 900 °C revealed that both alloys tended to obey the desired parabolic rate law. Post-exposure analysis by means of electron microscopy indicated that while the oxide scale formed on the AlTiVCr is adherent to the substrate, the scale developed on the Al[subscript 0.9]FeCrCoNi displays a notable spalling propensity. This study highlights the need for tailoring the protective properties of the oxide scale formed on the surface of the CCAs. |
| first_indexed | 2024-09-23T15:59:32Z |
| format | Article |
| id | mit-1721.1/131078 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T15:59:32Z |
| publishDate | 2021 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1310782022-10-02T05:34:59Z High-temperature oxidation behaviour of AlxFeCrCoNi and AlTiVCr compositionally complex alloys Esmaily, Mohsen Qiu, Yao Bigdeli, Sedigheh Venkataraman, Mahesh B. Allanore, Antoine Birbilis, Nick Massachusetts Institute of Technology. Department of Materials Science and Engineering MIT Materials Research Laboratory Compositionally complex alloys (CCAs), also termed as high entropy alloys (HEAs) or multi-principal element alloys (MPEAs), are being considered as a potential solution for many energy-related applications comprising extreme environments and temperatures. Herein, a review of the pertinent literature is performed in conjunction with original works characterising the oxidation behaviour of two diverse Al-containing alloys; namely a lightweight (5.06 g/cm[superscript 3] single-phase AlTiVCr CCA and a multiple-phase Al[subscript 0.9]FeCrCoNi CCA (6.9[superscript 3]). The thermogravimetric results obtained during oxidation of the alloys at 700 and 900 °C revealed that both alloys tended to obey the desired parabolic rate law. Post-exposure analysis by means of electron microscopy indicated that while the oxide scale formed on the AlTiVCr is adherent to the substrate, the scale developed on the Al[subscript 0.9]FeCrCoNi displays a notable spalling propensity. This study highlights the need for tailoring the protective properties of the oxide scale formed on the surface of the CCAs. 2021-07-13T21:38:12Z 2021-07-13T21:38:12Z 2020-08 2020-01 2021-07-12T17:20:18Z Article http://purl.org/eprint/type/JournalArticle 2397-2106 https://hdl.handle.net/1721.1/131078 Esmaily, Mohsen et al. "High-temperature oxidation behaviour of AlxFeCrCoNi and AlTiVCr compositionally complex alloys." npj Materials Degradation 4, 1 (August 2020): doi.org/10.1038/s41529-020-00129-2. en http://dx.doi.org/10.1038/s41529-020-00129-2 npj Materials Degradation Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Springer Science and Business Media LLC Nature |
| spellingShingle | Esmaily, Mohsen Qiu, Yao Bigdeli, Sedigheh Venkataraman, Mahesh B. Allanore, Antoine Birbilis, Nick High-temperature oxidation behaviour of AlxFeCrCoNi and AlTiVCr compositionally complex alloys |
| title | High-temperature oxidation behaviour of AlxFeCrCoNi and AlTiVCr compositionally complex alloys |
| title_full | High-temperature oxidation behaviour of AlxFeCrCoNi and AlTiVCr compositionally complex alloys |
| title_fullStr | High-temperature oxidation behaviour of AlxFeCrCoNi and AlTiVCr compositionally complex alloys |
| title_full_unstemmed | High-temperature oxidation behaviour of AlxFeCrCoNi and AlTiVCr compositionally complex alloys |
| title_short | High-temperature oxidation behaviour of AlxFeCrCoNi and AlTiVCr compositionally complex alloys |
| title_sort | high temperature oxidation behaviour of alxfecrconi and altivcr compositionally complex alloys |
| url | https://hdl.handle.net/1721.1/131078 |
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