Effects of chemical alternation on damage accumulation in concentrated solid-solution alloys

Abstract Single-phase concentrated solid-solution alloys (SP-CSAs) have recently gained unprecedented attention due to their promising properties. To understand effects of alloying elements on irradiation-induced defect production, recombination and evolution, an integrated study of ion irradiation,...

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Autores principales:	Mohammad W. Ullah, Haizhou Xue, Gihan Velisa, Ke Jin, Hongbin Bei, William J. Weber, Yanwen Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/bb1b9300bd6348a7beacaaa495505217
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spelling	oai:doaj.org-article:bb1b9300bd6348a7beacaaa4955052172021-12-02T12:32:29ZEffects of chemical alternation on damage accumulation in concentrated solid-solution alloys10.1038/s41598-017-04541-82045-2322https://doaj.org/article/bb1b9300bd6348a7beacaaa4955052172017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04541-8https://doaj.org/toc/2045-2322Abstract Single-phase concentrated solid-solution alloys (SP-CSAs) have recently gained unprecedented attention due to their promising properties. To understand effects of alloying elements on irradiation-induced defect production, recombination and evolution, an integrated study of ion irradiation, ion beam analysis and atomistic simulations are carried out on a unique set of model crystals with increasing chemical complexity, from pure Ni to Ni80Fe20, Ni50Fe50, and Ni80Cr20 binaries, and to a more complex Ni40Fe40Cr20 alloy. Both experimental and simulation results suggest that the binary and ternary alloys exhibit higher radiation resistance than elemental Ni. The modeling work predicts that Ni40Fe40Cr20 has the best radiation tolerance, with the number of surviving Frenkel pairs being factors of 2.0 and 1.4 lower than pure Ni and the 80:20 binary alloys, respectively. While the reduced defect mobility in SP-CSAs is identified as a general mechanism leading to slower growth of large defect clusters, the effect of specific alloying elements on suppression of damage accumulation is clearly demonstrated. This work suggests that concentrated solid-solution provides an effective way to enhance radiation tolerance by creating elemental alternation at the atomic level. The demonstrated chemical effects on defect dynamics may inspire new design principles of radiation-tolerant structural alloys for advanced energy systems.Mohammad W. UllahHaizhou XueGihan VelisaKe JinHongbin BeiWilliam J. WeberYanwen ZhangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mohammad W. Ullah Haizhou Xue Gihan Velisa Ke Jin Hongbin Bei William J. Weber Yanwen Zhang Effects of chemical alternation on damage accumulation in concentrated solid-solution alloys
description	Abstract Single-phase concentrated solid-solution alloys (SP-CSAs) have recently gained unprecedented attention due to their promising properties. To understand effects of alloying elements on irradiation-induced defect production, recombination and evolution, an integrated study of ion irradiation, ion beam analysis and atomistic simulations are carried out on a unique set of model crystals with increasing chemical complexity, from pure Ni to Ni80Fe20, Ni50Fe50, and Ni80Cr20 binaries, and to a more complex Ni40Fe40Cr20 alloy. Both experimental and simulation results suggest that the binary and ternary alloys exhibit higher radiation resistance than elemental Ni. The modeling work predicts that Ni40Fe40Cr20 has the best radiation tolerance, with the number of surviving Frenkel pairs being factors of 2.0 and 1.4 lower than pure Ni and the 80:20 binary alloys, respectively. While the reduced defect mobility in SP-CSAs is identified as a general mechanism leading to slower growth of large defect clusters, the effect of specific alloying elements on suppression of damage accumulation is clearly demonstrated. This work suggests that concentrated solid-solution provides an effective way to enhance radiation tolerance by creating elemental alternation at the atomic level. The demonstrated chemical effects on defect dynamics may inspire new design principles of radiation-tolerant structural alloys for advanced energy systems.
format	article
author	Mohammad W. Ullah Haizhou Xue Gihan Velisa Ke Jin Hongbin Bei William J. Weber Yanwen Zhang
author_facet	Mohammad W. Ullah Haizhou Xue Gihan Velisa Ke Jin Hongbin Bei William J. Weber Yanwen Zhang
author_sort	Mohammad W. Ullah
title	Effects of chemical alternation on damage accumulation in concentrated solid-solution alloys
title_short	Effects of chemical alternation on damage accumulation in concentrated solid-solution alloys
title_full	Effects of chemical alternation on damage accumulation in concentrated solid-solution alloys
title_fullStr	Effects of chemical alternation on damage accumulation in concentrated solid-solution alloys
title_full_unstemmed	Effects of chemical alternation on damage accumulation in concentrated solid-solution alloys
title_sort	effects of chemical alternation on damage accumulation in concentrated solid-solution alloys
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/bb1b9300bd6348a7beacaaa495505217
work_keys_str_mv	AT mohammadwullah effectsofchemicalalternationondamageaccumulationinconcentratedsolidsolutionalloys AT haizhouxue effectsofchemicalalternationondamageaccumulationinconcentratedsolidsolutionalloys AT gihanvelisa effectsofchemicalalternationondamageaccumulationinconcentratedsolidsolutionalloys AT kejin effectsofchemicalalternationondamageaccumulationinconcentratedsolidsolutionalloys AT hongbinbei effectsofchemicalalternationondamageaccumulationinconcentratedsolidsolutionalloys AT williamjweber effectsofchemicalalternationondamageaccumulationinconcentratedsolidsolutionalloys AT yanwenzhang effectsofchemicalalternationondamageaccumulationinconcentratedsolidsolutionalloys
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Effects of chemical alternation on damage accumulation in concentrated solid-solution alloys

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