Effect of nano-oxide particle size on radiation resistance of iron-chromium alloys

被引：23
作者：
Xu, Weizong [1 ]
Li, Lulu [1 ]
Valdez, James A. [2 ]
Saber, Mostafa [3 ]
Zhu, Yuntian [1 ]
Koch, Carl C. [1 ]
Scattergood, Ronald O. [1 ]
机构：
[1] N Carolina State Univ, Dept Mat Sci & Engn, Box 7907, Raleigh, NC 27695 USA
[2] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA
[3] Portland State Univ, Dept Mech & Mat Engn, Portland, OR 97201 USA
来源：
JOURNAL OF NUCLEAR MATERIALS | 2016年 / 469卷
基金：
美国国家科学基金会;
关键词：
He bubble; Irradiation; Nano-oxide; Void swelling; NANOSTRUCTURED FERRITIC ALLOYS; THERMAL-STABILITY; IRRADIATION; STEELS; STRENGTH; BEHAVIOR; DAMAGE; ZRO2;
D O I：
10.1016/j.jnucmat.2015.11.044
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Radiation resistance of Fe-14Cr alloys under 200 keV He irradiation at 500 degrees C was systematically investigated with varying sizes of nano oxide Zr, Hf and Cr particles. It is found that these nano oxide particles acted as effective sites for He bubble formation. By statistically analyzing 700-1500 He bubbles at the depth of about 150-700 nm from a series of HRTEM images for each sample, we established the variation of average He bubble size, He bubble density, and swelling percentage along the depth, and found them to be consistent with the He concentration profile calculated from the SIRM program. Oxide particles with sizes less than 3.5-4 nm are found most effective for enhancing radiation resistance in the studied alloy systems. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：72 / 81
页数：10
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