Microstructure change of ODS steel by ultra-high temperature heating test

Yamazaki, Jin*; Onuma, Masato*; Tanno, Takashi ; Otsuka, Satoshi ; Toyama, Takeshi*; Mitsuhara, Masatoshi*; Nakashima, Hideharu*

The stability of the nano-meter sized oxide dispersoids in ODS steel was evaluated by the small-angle X-ray scattering (SAXS) method in order to evaluate the properties of ODS steel under ultra-high temperatures assuming accident situations. It was found that the oxide is generally stable up to 1250 $^{circ}$ C, but the oxide dispersion state changes even in a short time at 1300 $^{circ}$ C or higher. This theme was supported by JPMXD0219214482, a nuclear system research and development project of the Ministry of Education, Culture, Sports, Science and Technology.

Language	:	Japanese
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Meeting title	:	日本金属学会2022年春期(第170回)講演大会
Held date	:	2022/03
Location (city)	:	東京(online)
Location (country)	:	日本
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Keywords	:	ODS鋼; 小角散乱解析; 酸化物分散状態; 超高温加熱
Research Facility	:	MMF(照射材料試験施設)
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Cooperating Institute	:	東北大学; 九州大学; 北海道大学

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Registration No. : BB20211342
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