MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Structure of Nano-Size Oxides in ODS Steels and Its Stability under Electron Irradiation
K. OkaS. OhnukiS. YamashitaN. AkasakaS. OhtsukaH. Tanigawa
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2007 Volume 48 Issue 10 Pages 2563-2566

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Abstract

For understanding the microstructual details of nano-size oxide particles, three types of ODS ferritic and austenitic steels were examined by high voltage electron microscopy, EDS and AP-FIM. The oxide included Y, Ti and O and showed a shell-like structure with different composition. The shell-like structure depends on crystal structure of the matrix during fabrication process. To evaluate the irradiation stability of the oxide particles, the electron irradiation was carried out to 47 dpa in the temperature range between room temperature and 923 K. During the irradiation, the oxide particles did not show obvious change in size. The irradiation behavior is discussed comparing with the results recently reported.

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© 2007 The Japan Institute of Metals and Materials
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