Understanding effects of chemical complexity on helium bubble formation in Ni-based concentrated solid solution alloys based on elemental segregation measurements

Xing Wang; Ke Jin; Chun Yin Wong; Di Chen; Hongbin Bei; Yongqiang Wang; Maxim Ziatdinov; William J. Weber; Yanwen Zhang; Jonathan Poplawsky; Karren L. More

doi:10.1016/j.jnucmat.2022.153902

Understanding effects of chemical complexity on helium bubble formation in Ni-based concentrated solid solution alloys based on elemental segregation measurements

Xing Wang, Ke Jin, Chun Yin Wong, Di Chen, Hongbin Bei, Yongqiang Wang, Maxim Ziatdinov, William J. Weber, Yanwen Zhang, Jonathan Poplawsky, Karren L. More

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Helium bubble formation and swelling were systematically studied in Ni-based concentrated solid solution alloys containing different numbers and types of elements. Our microscopy analysis showed that although increasing the alloy chemical complexity helps suppress bubble formation in general, there is no monotonic relationship between the bubble growth rate and the number of alloying elements. Certain elements (e.g., Fe and Pd) are more effective in suppressing bubble growth than others (e.g., Cr and Mn). Atom probe tomography was applied to accurately measure elemental segregation around bubbles, revealing unique effects of certain alloying elements on vacancy migration towards bubbles. More specifically, the high vacancy mobility via Cr sites leads to a large vacancy flux and an increased bubble size, while the high degree of atomic size mismatch introduced by Pd helps deflect vacancy flow away from bubbles and decrease the amount of swelling. The effects identified in this study provide new strategies to design concentrated solid solutions with superior resistance to swelling.

Original language	English
Article number	153902
Journal	Journal of Nuclear Materials
Volume	569
DOIs	https://doi.org/10.1016/j.jnucmat.2022.153902
State	Published - Oct 2022

Funding

This work was supported by the Energy Dissipation to Defect Evolution (EDDE) Center, an Energy Frontier Research Center funded by the U.S. Department of Energy , Office of Science, Basic Energy Sciences under contract number DE-AC05-00OR22725 . APT and electron microscopy research was supported by the Center for Nanophase Materials Sciences (CNMS), which is a US Department of Energy, Office of Science User Facility at Oak Ridge National Laboratory. Helium implantations were supported by the Center for Integrated Nanotechnologies (CINT), an Office of Science User Facility operated for the U.S. Department of Energy Office of Science. Los Alamos National Laboratory, an affirmative action equal opportunity employer, is managed by Triad National Security, LLC for the U.S. Department of Energy's NNSA , under contract 89233218CNA000001 . The authors would like to thank James Burns for assistance in running the APT experiments.

Funders	Funder number
Center for Nanophase Materials Sciences
U.S. Department of Energy
Office of Science
Basic Energy Sciences	DE-AC05-00OR22725
Oak Ridge National Laboratory
Los Alamos National Laboratory	89233218CNA000001
Center for Integrated Nanotechnologies

Keywords

Atom probe tomography (APT)
High entropy alloys
Irradiation effect
Segregation

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10.1016/j.jnucmat.2022.153902

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Wang, X., Jin, K., Wong, C. Y., Chen, D., Bei, H., Wang, Y., Ziatdinov, M., Weber, W. J., Zhang, Y., Poplawsky, J., & More, K. L. (2022). Understanding effects of chemical complexity on helium bubble formation in Ni-based concentrated solid solution alloys based on elemental segregation measurements. Journal of Nuclear Materials, 569, Article 153902. https://doi.org/10.1016/j.jnucmat.2022.153902

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title = "Understanding effects of chemical complexity on helium bubble formation in Ni-based concentrated solid solution alloys based on elemental segregation measurements",

abstract = "Helium bubble formation and swelling were systematically studied in Ni-based concentrated solid solution alloys containing different numbers and types of elements. Our microscopy analysis showed that although increasing the alloy chemical complexity helps suppress bubble formation in general, there is no monotonic relationship between the bubble growth rate and the number of alloying elements. Certain elements (e.g., Fe and Pd) are more effective in suppressing bubble growth than others (e.g., Cr and Mn). Atom probe tomography was applied to accurately measure elemental segregation around bubbles, revealing unique effects of certain alloying elements on vacancy migration towards bubbles. More specifically, the high vacancy mobility via Cr sites leads to a large vacancy flux and an increased bubble size, while the high degree of atomic size mismatch introduced by Pd helps deflect vacancy flow away from bubbles and decrease the amount of swelling. The effects identified in this study provide new strategies to design concentrated solid solutions with superior resistance to swelling.",

keywords = "Atom probe tomography (APT), High entropy alloys, Irradiation effect, Segregation",

author = "Xing Wang and Ke Jin and Wong, {Chun Yin} and Di Chen and Hongbin Bei and Yongqiang Wang and Maxim Ziatdinov and Weber, {William J.} and Yanwen Zhang and Jonathan Poplawsky and More, {Karren L.}",

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year = "2022",

month = oct,

doi = "10.1016/j.jnucmat.2022.153902",

language = "English",

volume = "569",

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Wang, X, Jin, K, Wong, CY, Chen, D, Bei, H, Wang, Y, Ziatdinov, M, Weber, WJ, Zhang, Y, Poplawsky, J & More, KL 2022, 'Understanding effects of chemical complexity on helium bubble formation in Ni-based concentrated solid solution alloys based on elemental segregation measurements', Journal of Nuclear Materials, vol. 569, 153902. https://doi.org/10.1016/j.jnucmat.2022.153902

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AU - Wang, Xing

AU - Jin, Ke

AU - Wong, Chun Yin

AU - Chen, Di

AU - Bei, Hongbin

AU - Wang, Yongqiang

AU - Ziatdinov, Maxim

AU - Weber, William J.

AU - Zhang, Yanwen

AU - Poplawsky, Jonathan

AU - More, Karren L.

PY - 2022/10

Y1 - 2022/10

N2 - Helium bubble formation and swelling were systematically studied in Ni-based concentrated solid solution alloys containing different numbers and types of elements. Our microscopy analysis showed that although increasing the alloy chemical complexity helps suppress bubble formation in general, there is no monotonic relationship between the bubble growth rate and the number of alloying elements. Certain elements (e.g., Fe and Pd) are more effective in suppressing bubble growth than others (e.g., Cr and Mn). Atom probe tomography was applied to accurately measure elemental segregation around bubbles, revealing unique effects of certain alloying elements on vacancy migration towards bubbles. More specifically, the high vacancy mobility via Cr sites leads to a large vacancy flux and an increased bubble size, while the high degree of atomic size mismatch introduced by Pd helps deflect vacancy flow away from bubbles and decrease the amount of swelling. The effects identified in this study provide new strategies to design concentrated solid solutions with superior resistance to swelling.

AB - Helium bubble formation and swelling were systematically studied in Ni-based concentrated solid solution alloys containing different numbers and types of elements. Our microscopy analysis showed that although increasing the alloy chemical complexity helps suppress bubble formation in general, there is no monotonic relationship between the bubble growth rate and the number of alloying elements. Certain elements (e.g., Fe and Pd) are more effective in suppressing bubble growth than others (e.g., Cr and Mn). Atom probe tomography was applied to accurately measure elemental segregation around bubbles, revealing unique effects of certain alloying elements on vacancy migration towards bubbles. More specifically, the high vacancy mobility via Cr sites leads to a large vacancy flux and an increased bubble size, while the high degree of atomic size mismatch introduced by Pd helps deflect vacancy flow away from bubbles and decrease the amount of swelling. The effects identified in this study provide new strategies to design concentrated solid solutions with superior resistance to swelling.

KW - Atom probe tomography (APT)

KW - High entropy alloys

KW - Irradiation effect

KW - Segregation

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DO - 10.1016/j.jnucmat.2022.153902

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VL - 569

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ER -

Understanding effects of chemical complexity on helium bubble formation in Ni-based concentrated solid solution alloys based on elemental segregation measurements

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