Size-dependent characteristics of ultra-fine oxygen-enriched nanoparticles in austenitic steels

被引：9
|
作者：
Miao, Yinbin [1 ,2 ]
Mo, Kun [1 ]
Zhou, Zhangjian [3 ]
Liu, Xiang [2 ]
Lan, Kuan-Che [2 ]
Zhang, Guangming [2 ,3 ]
Miller, Michael K. [4 ]
Powers, Kathy A. [4 ]
Stubbins, James F. [2 ,5 ]
机构：
[1] Argonne Natl Lab, Lemont, IL 60439 USA
[2] Univ Illinois, Urbana, IL 61801 USA
[3] Univ Sci & Technol Beijing, Beijing 100082, Peoples R China
[4] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA
[5] Kyushu Univ, Int Inst Carbon Neutral Energy Res, Fukuoka 8190395, Japan
来源：
JOURNAL OF NUCLEAR MATERIALS | 2016年 / 480卷
关键词：
Oxide dispersion strengthened (ODS) alloy; Austenitic steels; Atom probe tomography; High-resolution transmission electron; microscopy (HRTEM); Nanostructure; STRENGTHENED FERRITIC STEELS; F/M ODS STEEL; ION IRRADIATION; ATOM-PROBE; DISLOCATION LOOPS; HIGH-TEMPERATURES; OXIDE PARTICLES; ALLOYS; SYNCHROTRON; EVOLUTION;
D O I：
10.1016/j.jnucmat.2016.08.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Here, a coordinated investigation of the elemental composition and morphology of ultra-fine-scale nanoparticles as a function of size within a variety of austenitic oxide dispersion-strengthened (ODS) steels is reported. Atom probe tomography was utilized to evaluate the elemental composition of these nanoparticles. Meanwhile, the crystal structures and orientation relationships were determined by high resolution transmission electron microscopy. The nanoparticles with sufficient size (>4 nm) to maintain a Y2Ti2-xO7-2x stoichiometry were found to have a pyrochlore structure, whereas smaller YxTiyOz nanoparticles lacked a well-defined structure. The size-dependent characteristics of the nanoparticles in austenitic ODS steels differ from those in ferritic/martensitic ODS steels. (c) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：195 / 201
页数：7
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