Long-term thermal stability of nanoclusters in ODS-Eurofer steel: An atom probe tomography study

Oxide-dispersion strengthened materials are important candidates for several high-temperature structural applications in advanced nuclear power plants. Most of the desirable mechanical properties presented by these materials are due to the dispersion of stable nanoparticles in the matrix. Samples of ODS-Eurofer steel were annealed for 4320 h (6 months) at 800 degrees C. The material was characterized using atom probe tomography in both conditions (prior and after heat treatment). The particles number density, size distribution, and chemical compositions were determined. No significant changes were observed between the two conditions indicating a high thermal stability of the Y-rich nanoparticles at 800 degrees C. (C) 2017 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2017-08
Language
English
Keywords

DISPERSION-STRENGTHENED-STEELS; DEGREES-C; TEM CHARACTERIZATION; FERRITIC ALLOYS; OXIDE; IRRADIATION; MICROSTRUCTURE; PARTICLES; TI

Citation

JOURNAL OF NUCLEAR MATERIALS, v.492, pp.142 - 147

ISSN
0022-3115
DOI
10.1016/j.jnucmat.2017.05.027
URI
http://hdl.handle.net/10203/225133
Appears in Collection
MS-Journal Papers(저널논문)
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