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From High-Entropy Alloys to High-Entropy Ceramics: The Radiation-Resistant Highly Concentrated Refractory Carbide (CrNbTaTiW)C

35 Pages Posted: 7 Feb 2023 Publication Status: Under Review

See all articles by Matheus Araujo Tunes

Matheus Araujo Tunes

Montanuniversität Leoben; Government of the United States of America - Materials Science and Technology Division

Stefan Fritze

Uppsala University - Department of Chemistry

Barbara Osinger

Uppsala University - Department of Chemistry

Patrick Willenshofer

Montanuniversität Leoben - Chair of Nonferrous Metallurgy

Andrew M. Alvarado

Government of the United States of America - Theoretical Division

Enrique Martinez

Government of the United States of America - Theoretical Division

Ashok Menon

Uppsala University - Department of Chemistry

Petter Ström

Uppsala University - Department of Physics and Astronomy

Graeme Greaves

University of Huddersfield - School of Computing and Engineering

Erik Lewin

Uppsala University - Department of Chemistry

Ulf Jansson

Uppsala University - Department of Chemistry

Stefan Pogatscher

Montanuniversität Leoben - Christian Doppler Laboratory for Advanced Aluminum Alloys

Tarik Saleh

Government of the United States of America - Materials Science and Technology Division

Vladimir M. Vishnyakov

University of Huddersfield - School of Computing and Engineering

Osman El-Atwani

Government of the United States of America - Pacific Northwest National Laboratory; Government of the United States of America - Materials Science and Technology Division

Abstract

High-entropy materials represent the state-of-the-art on the alloy design strategy for future applications in extreme environments. Recent data indicates that high-entropy alloys (HEAs) exhibit outstanding radiation resistance in face of existing diluted alloy counterparts due to suppressed damage formation and evolution. An extension of the HEA concept is presented in this paper towards the synthesis and characterization of novel high-entropy ceramics as emergent materials for application in environments where energetic particle irradiation is a major concern. A novel carbide within the quinary refractory system CrNbTaTiW has been synthesized using magnetron-sputtering. The material exhibited nanocrystalline grains, singlephase crystal structure and C content around 50 at.%. Heavy-ion irradiation with in-situ Transmission Electron Microscopy was used to assess the irradiation response of the new highentropy carbide (HEC) at 573 K and a comparison with the HEA within the system is made. No displacement damage effects appear within the microstructures of both HEA and HEC up to a dose of 17 displacements-per-atom. Surprisingly, the HEC has not amorphized under the investigated conditions. Xe was implanted in both materials and bubbles nucleated, but smaller sizes compared with conventional nuclear materials shedding light they are potential candidates for use in nuclear energy.

Keywords: High-entropy ceramics, High-entropy alloys, Nanocrystalline materials, radiation damage, extreme environments

Suggested Citation

Tunes, Matheus Araujo and Fritze, Stefan and Osinger, Barbara and Willenshofer, Patrick and Alvarado, Andrew M. and Martinez, Enrique and Menon, Ashok and Ström, Petter and Greaves, Graeme and Lewin, Erik and Jansson, Ulf and Pogatscher, Stefan and Saleh, Tarik and Vishnyakov, Vladimir M. and El-Atwani, Osman, From High-Entropy Alloys to High-Entropy Ceramics: The Radiation-Resistant Highly Concentrated Refractory Carbide (CrNbTaTiW)C. Available at SSRN: https://ssrn.com/abstract=4349924 or http://dx.doi.org/10.2139/ssrn.4349924

Matheus Araujo Tunes (Contact Author)

Montanuniversität Leoben ( email )

Government of the United States of America - Materials Science and Technology Division ( email )

Los Alamos, NM 87545
United States

Stefan Fritze

Uppsala University - Department of Chemistry ( email )

Barbara Osinger

Uppsala University - Department of Chemistry

Patrick Willenshofer

Montanuniversität Leoben - Chair of Nonferrous Metallurgy

Andrew M. Alvarado

Government of the United States of America - Theoretical Division

Enrique Martinez

Government of the United States of America - Theoretical Division

Ashok Menon

Uppsala University - Department of Chemistry ( email )

Petter Ström

Uppsala University - Department of Physics and Astronomy

Graeme Greaves

University of Huddersfield - School of Computing and Engineering

Queensgate
Huddersfield, HD1 3DH
United Kingdom

Erik Lewin

Uppsala University - Department of Chemistry ( email )

Ulf Jansson

Uppsala University - Department of Chemistry

Stefan Pogatscher

Montanuniversität Leoben - Christian Doppler Laboratory for Advanced Aluminum Alloys ( email )

Tarik Saleh

Government of the United States of America - Materials Science and Technology Division

Vladimir M. Vishnyakov

University of Huddersfield - School of Computing and Engineering

Osman El-Atwani

Government of the United States of America - Pacific Northwest National Laboratory ( email )

Government of the United States of America - Materials Science and Technology Division ( email )

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