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Characterizing heavy ions-irradiated Zr/Nb: Structure and mechanical properties
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SYSNO ASEP 0560394 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Characterizing heavy ions-irradiated Zr/Nb: Structure and mechanical properties Author(s) Daghbouj, N. (CZ)
Sen, H. S. (CZ)
Čížek, J. (CZ)
Lorinčík, J. (CZ)
Karlík, M. (CZ)
Callisti, M. (GB)
Čech, J. (CZ)
Havránek, Vladimír (UJF-V) RID, SAI, ORCID
Li, B. (CN)
Kršjak, V. (SK)
Liedke, M. O. (DE)
Butterling, M. (DE)
Wagner, A. (DE)
Polcar, T. (CZ)Number of authors 14 Article number 110732 Source Title Materials and Design. - : Elsevier - ISSN 0264-1275
Roč. 219, JUL (2022)Number of pages 13 s. Publication form Print - P Language eng - English Country GB - United Kingdom Keywords Multilayers ; Ion irradiation ; TEM ; Irradiation hardening ; Interface ; Dislocation OECD category Mechanical engineering R&D Projects EF16_013/0001812 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Research Infrastructure CzechNanoLab - 90110 - Vysoké učení technické v Brně Method of publishing Open access Institutional support UJF-V - RVO:61389005 UT WOS 000808151400008 EID SCOPUS 85130960268 DOI 10.1016/j.matdes.2022.110732 Annotation In this work, the radiation responses of Zr/Nb nanostructured metallic multilayers (NMMs) are studied. The nanostructures with different layer thicknesses were deposited on Si (111) substrate by using magnetron sputtering and were subjected to heavy-ion irradiation at room temperature with different fluences. Nanoindentation, XRD, DFT, SIMS, and Variable Energy Positron Annihilation Spectroscopy (VEPAS) techniques were used to study the type and distribution of defects, and strain within the material as well as the changes in the hardness of the structures as a function of damage. Our results suggest that the strain and the irradiation hardening are layer thickness- and damage-dependent while they are independent of the type of irradiated ions. The magnitude of hardening decreases with decreasing individual layer thickness indicating that the number of interfaces has a direct effect on the radiation tolerance enhancement. For thin layers with a periodicity of 27 nm (Zr/Nb27), a transition from hardening to softening occurs at high fluence, and a saturation point is reached in thick layers with a periodicity of 96 nm (Zr/Nb96). The as-deposited thin multilayers presented a significantly higher atomic-scale disorder which increases with ion irradiation compared to the thick multilayers. VEPAS reveals the vacancy defects before and after irradiation that contribute to the presented strain. Based on the findings, thin nanostructured Zr/Nb multilayered structures possess excellent radiation resistance due to the high density of interfaces that act as sinks for radiation-induced point defects. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2023 Electronic address https://doi.org/10.1016/j.matdes.2022.110732
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