Corrosion and Thermal Stability of CrMnFeNi High Entropy Alloy in Molten FLiBe Salt

The corrosion behavior of the FCC Cr(18)Mn(27)Fe(27.5)Ni(27.5) high entropy alloy (HEA) after exposure to molten FLiBe salt at 700 °C for 1000 hours, has been investigated. Results show that the HEA lost a higher mass compared to the reference 316 H stainless steel due to the dissolution of Mn into...

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Autores principales: Elbakhshwan, Mohamed, Doniger, William, Falconer, Cody, Moorehead, Michael, Parkin, Calvin, Zhang, Chuan, Sridharan, Kumar, Couet, Adrien
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6908586/
https://www.ncbi.nlm.nih.gov/pubmed/31831873
http://dx.doi.org/10.1038/s41598-019-55653-2
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author Elbakhshwan, Mohamed
Doniger, William
Falconer, Cody
Moorehead, Michael
Parkin, Calvin
Zhang, Chuan
Sridharan, Kumar
Couet, Adrien
author_facet Elbakhshwan, Mohamed
Doniger, William
Falconer, Cody
Moorehead, Michael
Parkin, Calvin
Zhang, Chuan
Sridharan, Kumar
Couet, Adrien
author_sort Elbakhshwan, Mohamed
collection PubMed
description The corrosion behavior of the FCC Cr(18)Mn(27)Fe(27.5)Ni(27.5) high entropy alloy (HEA) after exposure to molten FLiBe salt at 700 °C for 1000 hours, has been investigated. Results show that the HEA lost a higher mass compared to the reference 316 H stainless steel due to the dissolution of Mn into the molten salt. The loss of Mn from the alloy appeared to discourage the dissolution of Cr in the molten fluoride salts which is widely recognized as the mechanism of corrosion degradation. Thermal exposure at 700 °C for 1000 hours also led to the precipitation of an additional BCC phase Cr(67)Fe(13)Mn(18.5)Ni(1.5), which was confirmed by CALPHAD predictions.
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spelling pubmed-69085862019-12-16 Corrosion and Thermal Stability of CrMnFeNi High Entropy Alloy in Molten FLiBe Salt Elbakhshwan, Mohamed Doniger, William Falconer, Cody Moorehead, Michael Parkin, Calvin Zhang, Chuan Sridharan, Kumar Couet, Adrien Sci Rep Article The corrosion behavior of the FCC Cr(18)Mn(27)Fe(27.5)Ni(27.5) high entropy alloy (HEA) after exposure to molten FLiBe salt at 700 °C for 1000 hours, has been investigated. Results show that the HEA lost a higher mass compared to the reference 316 H stainless steel due to the dissolution of Mn into the molten salt. The loss of Mn from the alloy appeared to discourage the dissolution of Cr in the molten fluoride salts which is widely recognized as the mechanism of corrosion degradation. Thermal exposure at 700 °C for 1000 hours also led to the precipitation of an additional BCC phase Cr(67)Fe(13)Mn(18.5)Ni(1.5), which was confirmed by CALPHAD predictions. Nature Publishing Group UK 2019-12-12 /pmc/articles/PMC6908586/ /pubmed/31831873 http://dx.doi.org/10.1038/s41598-019-55653-2 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Elbakhshwan, Mohamed
Doniger, William
Falconer, Cody
Moorehead, Michael
Parkin, Calvin
Zhang, Chuan
Sridharan, Kumar
Couet, Adrien
Corrosion and Thermal Stability of CrMnFeNi High Entropy Alloy in Molten FLiBe Salt
title Corrosion and Thermal Stability of CrMnFeNi High Entropy Alloy in Molten FLiBe Salt
title_full Corrosion and Thermal Stability of CrMnFeNi High Entropy Alloy in Molten FLiBe Salt
title_fullStr Corrosion and Thermal Stability of CrMnFeNi High Entropy Alloy in Molten FLiBe Salt
title_full_unstemmed Corrosion and Thermal Stability of CrMnFeNi High Entropy Alloy in Molten FLiBe Salt
title_short Corrosion and Thermal Stability of CrMnFeNi High Entropy Alloy in Molten FLiBe Salt
title_sort corrosion and thermal stability of crmnfeni high entropy alloy in molten flibe salt
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6908586/
https://www.ncbi.nlm.nih.gov/pubmed/31831873
http://dx.doi.org/10.1038/s41598-019-55653-2
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