Interphase boundary layer-dominated strain mechanisms in Cu+ implanted Zr-Nb nanoscale multilayers

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F21%3APU138602" target="_blank" >RIV/00216305:26210/21:PU138602 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/21:00541848 RIV/68407700:21230/21:00345490 RIV/68407700:21340/21:00345490 RIV/61389005:_____/21:00541848 RIV/00216208:11320/21:10437535

Result on the web

<a href="https://doi.org/10.1016/j.actamat.2020.10.072" target="_blank" >https://doi.org/10.1016/j.actamat.2020.10.072</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actamat.2020.10.072" target="_blank" >10.1016/j.actamat.2020.10.072</a>

Result language

angličtina

Original language name

Interphase boundary layer-dominated strain mechanisms in Cu+ implanted Zr-Nb nanoscale multilayers

Original language description

Sputter-deposited Zr/Nb nanoscale metallic multilayers with a periodicity of 27 (thin) and 96 nm (thick) were subjected to Cu + implantation with low and high fluences and then studied using various experimental techniques in combination with DFT calculations. After Cu + implantation, the thinner multilayer exhibited a tensile strain along c-axis in Nb layers and a compressive strain in Zr layers, while the thicker multilayer showed a compressive strain in both layers. The strain is higher in the thin multilayer and increases for higher fluences. We developed a mathematical method for the fundamental understanding of the deformation mechanisms in metallic multilayers subjected to radiation damage. In the model, the cumulative strain within a layer is described as the combination of two contributions coming from the interfacial region and the inner region of the layers. The semi-analytical model predicts that the interfacial strain is dominant and extends over a certain region around the interface. Predictions are well supported by ab-initio calculations which show that in the vicinity of the interface and in the Zr side, vacancies and interstitials (low energy barriers) exhibit high mobility compared to the Nb side, thus resulting in a high recombination rate. As a consequence, less strain occurs in the Zr side of the interface compared to the Nb side. The density and distribution of various types of defects along the ion profile (low and high damaged regions) are obtained by combining DFT results and the predictions of the model. (c) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Acta materialia

ISSN

1359-6454

e-ISSN

1873-2453

Volume of the periodical

202

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

14

Pages from-to

317-330

UT code for WoS article

000599838400004

EID of the result in the Scopus database

2-s2.0-85096159875