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High-temperature ox...
High-temperature oxidation behaviour of AlxFeCrCoNi and AlTiVCr compositionally complex alloys
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- Esmaily, Mohsen (author)
- Massachusetts Institute of Technology (MIT),Monash University
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- Qiu, Yao (author)
- Monash University
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- Bigdeli, Sedigheh, 1984 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Venkataraman, Mahesh B. (author)
- Australian National University
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- Allanore, Antoine (author)
- Massachusetts Institute of Technology (MIT)
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- Birbilis, Nick (author)
- Australian National University
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(creator_code:org_t)
- 2020-08-13
- 2020
- English.
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In: npj Materials Degradation. - : Springer Science and Business Media LLC. - 2397-2106. ; 4:1
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https://doi.org/10.1...
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Abstract
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- 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(3)) single-phase AlTiVCr CCA and a multiple-phase Al0.9FeCrCoNi CCA (6.9 g/cm(3)). The thermogravimetric results obtained during oxidation of the alloys at 700 and 900 degrees 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 Al0.9FeCrCoNi 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.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Korrosionsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Corrosion Engineering (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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