Mechanical and microstructural response of the Al0.5CoCrFeNi high entropy alloy to Si and Ni ion irradiation

The nearly infinite compositional design space of high entropy alloys (HEAs) presents many opportunities to improve performance in extreme environments, particularly for nuclear reactors. The ability of some HEAs to resist high amounts of radiation damage, while well documented, has not yet been ful...

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Main Authors:	M. Aizenshtein, Z. Ungarish, K.B. Woller, S. Hayun, M.P. Short
Format:	Article
Language:	English
Published:	Elsevier 2020-12-01
Series:	Nuclear Materials and Energy
Subjects:	Al0.5CoCrFeNi HEA Irradiation damage Nanoindentation
Online Access:	http://www.sciencedirect.com/science/article/pii/S2352179120300880

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spelling	doaj-d8679ea25a2f4a618ddce3bac2a2cd6f2020-12-19T05:07:47ZengElsevierNuclear Materials and Energy2352-17912020-12-0125100813Mechanical and microstructural response of the Al0.5CoCrFeNi high entropy alloy to Si and Ni ion irradiationM. Aizenshtein0Z. Ungarish1K.B. Woller2S. Hayun3M.P. Short4Materials Department, NRC-Negev, Beer-Sheva, Israel; Corresponding author.Materials Department, NRC-Negev, Beer-Sheva, IsraelPlasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, MA 02139, USAMaterials Engineering Department, Ben-Gurion University of the Negev, Beer-Sheva, IsraelDepartment of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USAThe nearly infinite compositional design space of high entropy alloys (HEAs) presents many opportunities to improve performance in extreme environments, particularly for nuclear reactors. The ability of some HEAs to resist high amounts of radiation damage, while well documented, has not yet been fully exploited. We studied the irradiation effect of different ions (Si and Ni) on the microstructure and mechanical properties of the Al0.5CoCrFeNi alloy at its equilibrium state, and of the individual response of each phase to irradiation. The results show a stronger effect of Si ions and differences in response of the ductile FCC (A1) and brittle ordered BCC (B2) phases towards irradiation. This finding highlights the need to further probe unexplored compositional spaces in HEAs, as further optimization is likely to yield further compositional and microstructural stability with practical applications.http://www.sciencedirect.com/science/article/pii/S2352179120300880Al0.5CoCrFeNiHEAIrradiation damageNanoindentation
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	M. Aizenshtein Z. Ungarish K.B. Woller S. Hayun M.P. Short
spellingShingle	M. Aizenshtein Z. Ungarish K.B. Woller S. Hayun M.P. Short Mechanical and microstructural response of the Al0.5CoCrFeNi high entropy alloy to Si and Ni ion irradiation Nuclear Materials and Energy Al0.5CoCrFeNi HEA Irradiation damage Nanoindentation
author_facet	M. Aizenshtein Z. Ungarish K.B. Woller S. Hayun M.P. Short
author_sort	M. Aizenshtein
title	Mechanical and microstructural response of the Al0.5CoCrFeNi high entropy alloy to Si and Ni ion irradiation
title_short	Mechanical and microstructural response of the Al0.5CoCrFeNi high entropy alloy to Si and Ni ion irradiation
title_full	Mechanical and microstructural response of the Al0.5CoCrFeNi high entropy alloy to Si and Ni ion irradiation
title_fullStr	Mechanical and microstructural response of the Al0.5CoCrFeNi high entropy alloy to Si and Ni ion irradiation
title_full_unstemmed	Mechanical and microstructural response of the Al0.5CoCrFeNi high entropy alloy to Si and Ni ion irradiation
title_sort	mechanical and microstructural response of the al0.5cocrfeni high entropy alloy to si and ni ion irradiation
publisher	Elsevier
series	Nuclear Materials and Energy
issn	2352-1791
publishDate	2020-12-01
description	The nearly infinite compositional design space of high entropy alloys (HEAs) presents many opportunities to improve performance in extreme environments, particularly for nuclear reactors. The ability of some HEAs to resist high amounts of radiation damage, while well documented, has not yet been fully exploited. We studied the irradiation effect of different ions (Si and Ni) on the microstructure and mechanical properties of the Al0.5CoCrFeNi alloy at its equilibrium state, and of the individual response of each phase to irradiation. The results show a stronger effect of Si ions and differences in response of the ductile FCC (A1) and brittle ordered BCC (B2) phases towards irradiation. This finding highlights the need to further probe unexplored compositional spaces in HEAs, as further optimization is likely to yield further compositional and microstructural stability with practical applications.
topic	Al0.5CoCrFeNi HEA Irradiation damage Nanoindentation
url	http://www.sciencedirect.com/science/article/pii/S2352179120300880
work_keys_str_mv	AT maizenshtein mechanicalandmicrostructuralresponseoftheal05cocrfenihighentropyalloytosiandniionirradiation AT zungarish mechanicalandmicrostructuralresponseoftheal05cocrfenihighentropyalloytosiandniionirradiation AT kbwoller mechanicalandmicrostructuralresponseoftheal05cocrfenihighentropyalloytosiandniionirradiation AT shayun mechanicalandmicrostructuralresponseoftheal05cocrfenihighentropyalloytosiandniionirradiation AT mpshort mechanicalandmicrostructuralresponseoftheal05cocrfenihighentropyalloytosiandniionirradiation
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Mechanical and microstructural response of the Al0.5CoCrFeNi high entropy alloy to Si and Ni ion irradiation

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