Microstructure characterization of oxide dispersion strengthened steels containing metallic chromium inclusions after high-temperature thermal aging

Otsuka, Satoshi ; Yano, Yasuhide ; Tanno, Takashi ; Kaito, Takeji ; Tanaka, Kenya

Microstructure characterizations of 9Cr-oxide dispersion strengthened (ODS) steels were carried out after high-temperature thermal aging to reproduce the anomalous microstructure change that occurred in the BOR-60 irradiation test-formation of abnormally coarse and irregular precipitates a few tens of micrometers in size. In the 9Cr-ODS steel containing metallic Cr inclusions, coarse and irregular precipitates were formed nearby metallic Cr inclusions after the 750 $^{circ}$ C thermal aging for 8,000h. Based on the analyses using energy dispersive X-ray spectrometry (EDX) and electron backscattered pattern (EBSP), coarse and irregular precipitates were identified as M23C6.

Language	:	English
Journal	:	Materials Transactions
Volume	:	54
Number	:	10
Pages	:	p.2018 - 2026
Publication Year/Month	:	2013/10
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Paper URL	:	https://doi.org/10.2320/matertrans.M2013217
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Keywords	:	no keyword
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Registration No. : AA20130179
JAEA Abstracts No. : 41001417
Paper Submission No. : 13412

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