Structural and mechanical properties of γ-irradiated Zr/Nb multilayer nanocomposites

被引：24

作者：

Callisti, M. ^{[1
]}

Lozano-Perez, Sergio ^{[2
]}

Polcar, T. ^{[3
]}

机构：

[1] Univ Southampton, Fac Engn & Environm, Mat Res Grp, Southampton SO17 1BJ, Hants, England

[2] Univ Oxford, Dept Mat, Oxford OX1 3PH, England

[3] Univ Southampton, Fac Engn & Environm, Natl Ctr Adv Tribol Southampton, Southampton SO17 1BJ, Hants, England

来源：

MATERIALS LETTERS | 2016年 / 163卷

基金：

英国工程与自然科学研究理事会;

关键词：

Multilayers; Irradiation embrittlement; Scanning/transmission electron microscopy; BEHAVIOR; GROWTH;

D O I：

10.1016/j.matlet.2015.10.057

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Zr/Nb multilayers with periodicities of 10, 30 and 60 nm were prepared by magnetron sputtering and irradiated for prolonged time (1311 h) by gamma-rays with energy of 1.25 MeV and a dose of 510 kGy. A qualitative comparison between XRD patterns acquired before and after irradiation revealed a progressive increase of compressive stress, especially in Nb layers, for smaller periodicities with a consequent increase in hardness measured by nanoindentation. The combination of smaller grain size and radiation-induced defect density distribution, primarily in Nb layers, was found to be responsible for the observed radiation hardening effect. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：138 / 141

页数：4