期刊
JOURNAL OF NUCLEAR MATERIALS
卷 518, 期 -, 页码 1-10出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnucmat.2019.02.037
关键词
Nanostructured ferritic alloys; Oxide dispersion strengthening; Ion irradiation; Dual-beam irradiation; Helium; Nanoindentation; Irradiation hardening
资金
- European Commission within the MATTER project [269706]
- European Commission within the MATISSE project [604862]
- German Federal Ministry of Education and Research (BMBF) [03SF0451]
Although the view that nm-sized oxide particles modify and essentially improve the irradiation resistance of Fe-Cr-based alloys is widely accepted, the correctness of this view has only been demonstrated in singular cases. An extension of the field of considered microstructures, irradiation conditions, and measures of irradiation resistance is required. The present study is focused on nanostructured ferritic Fe-14%Cr-based alloys, with and without the addition of 0.6 wt% Y2O3, produced via mechanical alloying and consolidation by spark plasma sintering. The materials were exposed to single-beam (Fe) and dual-beam (Fe and He) ion irradiations at room temperature. The initial microstructures were characterized, bimodal grain size distributions were observed and nanoindentation was applied to measure irradiation hardening for fine-grained and coarse-grained areas separately. We have found that grain size governs irradiation hardening for single-beam irradiation, while oxide nanoparticles play a dominant role for dual-beam irradiations. This sheds a light on the role of particle-matrix interfaces on helium management. (C) 2019 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据