Effects of impurity elements on mechanical properties and microstructures of reduced-activation ferritic/martensitic steels

Sawahata, Atsushi; Tanigawa, Hiroyasu; Shiba, Kiyoyuki; Enomoto, Masato*

Reduced activation ferritic/martensitic steels (RAFs), such as F82H (Fe-8Cr-2W-0.2V-0.04Ta-0.1C, in wt%), are one of the leading candidates for structural materials of fusion reactors. Impact property of F82H can be improved by adjusting the amount of tantalum or titanium concentration. On the other hand, it was reported by microstructure analyses of IEA steel that tantalum has a tendency to form oxides and causes a large dispersion of fracture toughness. In this study, the correlation between titanium or tantalum concentration and the impact property were reported focusing on difference in microstructure.

Language	:	English
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Meeting title	:	13th International Conference on Fusion Reactor Materials (ICFRM-13)
Held date	:	2007/12
Location (city)	:	Nice
Location (country)	:	France
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Keywords	:	no keyword
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Cooperating Institute	:	茨城大学

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Registration No. : BB20072718
JAEA Abstracts No. :
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