Publication detail

Interface-Driven Strain in Heavy Ion-Irradiated Zr/Nb Nanoscale Metallic Multilayers: Validation of Distortion Modeling via Local Strain Mapping

Sen, HS. Daghbouj, N. Callisti, M. Vronka, M. Karlik, M. Duchon, J. Cech, J. Lorincik, J. Havranek, V. Babor, P. Polcar, T.

Original Title

Interface-Driven Strain in Heavy Ion-Irradiated Zr/Nb Nanoscale Metallic Multilayers: Validation of Distortion Modeling via Local Strain Mapping

Type

journal article in Web of Science

Language

English

Original Abstract

Nanolayered metallic alloys are promising materials for nuclear applications thanks to their resistance to radiation damage. Here, we investigate the effect of ion (C, Si, and Cu) irradiation at room temperature with different tluences into sputtered Zr/Nb metallic multilayer films with periods 27 nm (thin) and 96 nm (thick). After irradiation, while a high strain in the entire thin nanoscale metallic multilayer (NMM) is observed, a quite small strain in the entire thick NMM is established. This difference is further analyzed by a semianalytical model, and the reasons behind it are revealed, which are also validated by local strain mapping. Both methods show that within a thick layer, two opposite distortions occur, making the overall strain small, whereas in a thin layer, all the atomic planes are affected by the interface and are subjected to only a single type of distortion (Nb-tension and Zr-compression). In both thin and thick NMMs, with increasing damage, the strain around the interface increases, resulting in a release of the elastic energy at the interface (decrease in the lattice mismatch), and the radiation-induced transition of the Zr/Nb interfaces from incoherent to partially coherent occurs. Density functional theory simulations decipher that the inequality of point defect diffusion flux from the inner to the interface-affected region is responsible for the presence of opposite distortions within a layer. Technologically, based on this work, we estimated that Zr/NbSS with thicknesses around Zr = 24 nm and Nb = 31 nm is the most promising multilayer system with the high radiation damage resistance and minimum swelling for nuclear applications.

Keywords

multilayers; ion irradiation; TEM; strain mapping DFT; diffusion

Authors

Sen, HS.; Daghbouj, N.; Callisti, M.; Vronka, M.; Karlik, M.; Duchon, J.; Cech, J.; Lorincik, J.; Havranek, V.; Babor, P.; Polcar, T.

Released

16. 3. 2022

Publisher

AMER CHEMICAL SOC

Location

WASHINGTON

ISBN

1944-8252

Periodical

ACS applied materials & interfaces

Year of study

14

Number

10

State

United States of America

Pages from

12777

Pages to

12796

Pages count

20

URL

https://pubs.acs.org/doi/10.1021/acsami.1c22995#

BibTex

@article{BUT178566,
  author="Sen, HS. and Daghbouj, N. and Callisti, M. and Vronka, M. and Karlik, M. and Duchon, J. and Cech, J. and Lorincik, J. and Havranek, V. and Babor, P. and Polcar, T.",
  title="Interface-Driven Strain in Heavy Ion-Irradiated Zr/Nb Nanoscale Metallic Multilayers: Validation of Distortion Modeling via Local Strain Mapping",
  journal="ACS applied materials & interfaces",
  year="2022",
  volume="14",
  number="10",
  pages="12777--12796",
  doi="10.1021/acsami.1c22995",
  issn="1944-8252",
  url="https://pubs.acs.org/doi/10.1021/acsami.1c22995#"
}