Refine your search�ソスF     
Report No.
 - 

The evaluation of irradiation effect on the mechanical properties of the oxide dispersion strengthened ferritic steel claddings irradiated at JOYO/CMIR-4&5

not registered ; not registered; Miyakawa, Shunichi

The effect of fast neutron irradiation on the mechanical properties of the oxide dispersion strengthened (ODS) ferritic steel claddings (1DS & 1DK) which were manufuctured by warm working as the first trial cladding tube manufucturing in JNC, were investigated. The samples were irradiated in JOYO/CMIR-4&5. Uni-axial tensile test, ring-tensile test, burst test and miniaturized Charpy impact test were carried out to study the mechanical properties such as strength and elongation, of irradiated ODS ferritic claddings. The results of this study showed that there was no considerable deterioration on the mechanical properties of these ODS ferritic steel cladding samples under the irradiation conditions examined. The results obtained in this study are as follows; (1)The increase in strength due to irradiation hardening appeared in higher temperatures ($$sim$$600,650$$^{circ}$$C) than that of austenitic steels such as PNC316. (2)There was an anisotropy in the short time range strengths after irradiation due to its particular crystalline structure so called "bamboo structure". (3)The elongation of hoop direction after irradiation was significantly tended to be much lower than that of longitudinal direction because of its particular "bamboo structure". (4)There was no obvious decrease in elongation and miniaturized Charpy impact properties under irradiation conditions examined. (5)TEM observation showed that there was no significant change in microstructure before and after irradiation except the precipitation of Laves phase on grain boundary after irradiation and that Y$$_{2}$$O$$_{3}$$ particles and their fine distribution might be stable during irradiation.

Acecsses

:

- Accesses

InCites™

:

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.