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arXiv · 2110.09222

Deciphering the role of Al$_2$O$_3$ formed during isothermal oxidation in a dual-phase AlCoCrFeNi$_{2.1}$ Eutectic High-Entropy Alloy

Mainak Saha
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Abstract

In recent times,there has been a significant volume of work on Eutectic High Entropy Alloys (EHEAs) owing to their remarkable castability combined with excellent mechanical properties,which aids in clearing obstacles for their technological applications. One of the most common EHEAs,which has been of enormous interest at present, primarily owing to its solidification and tensile behavior, is AlCoCrFeNi$_{2.1}$. However,to aim for high-temperature applications,oxidation behaviour of material is one of the major aspects that needs to be extensively investigated.To this end,the present work aims to study the phases evolved during oxidation at elevated temperatures as high as 950 and 1000$^\circ$C in AlCoCrFeNi$_{2.1}$ using XRD and also to determine the rate law followed for isothermal oxidation of this alloy at 950 and 1000$^\circ$C,in order to understand the role of Al$_2$O$_3$ phase formed during isothermal oxidation at 950 and 1000$^\circ$C.

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Mainak Saha. 2021-10-09. Deciphering the role of Al$_2$O$_3$ formed during isothermal oxidation in a dual-phase AlCoCrFeNi$_{2.1}$ Eutectic High-Entropy Alloy. https://arxiv.org/abs/2110.09222

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