The evaluation of irradiation effect on Charpy impact properties of the PNC-FMS and the ODS martensitic steel irradiated in JOYO/CMIR-5 and MARICO-1
Creators
- 1. Japan Nuclear Cycle Development Inst., Oarai, Ibaraki (Japan). Oarai Engineering Center
Description
The effect of fast neutron irradiation on impact properties of the PNC-FMS (2WFK) and ODS martensitic steel (H35), which were irradiated in the JOYO/CMIR-5 and MARICO-1, were investigated, because it was well known that irradiation-embrittlement was one of the most important issue to apply these ferritic steels to FBR core materials. The post irradiation half-sized and miniaturized Charpy impact tests were carried out to under stand the impact properties of these ferritic steels. The results obtained in this study are as follows: 1. In all irradiated 2WFK specimens, the impact properties depended on irradiation temperature rather than neutron fluence under these irradiation conditions. The impact properties of 2WFK specimens irradiated at the temperature range of 400 to 500degC almost scarcely change, however, those of 2WFK specimens irradiated at 659degC obviously decreased. 2. The impact properties of 2WFK specimens irradiated at 495degC were similar to those of as-received 2WFK specimen. This indicates that the effects of thermal aging improvement and irradiation degradation canceled each other. Moreover, the impact properties of 2WFK specimens irradiated at 659degC decreased more remarkably than those of thermal aged specimens at 650degC. It is suggested that these 2WFK impact properties seemed to be understood by microstructure behaviors, especially precipitation behaviors, by means of irradiation and thermal aging. 3. It is suggested that the anisotropy of H35 ODS steel was considerably improved by the α/γ phase transformation, and H35 specimens had superior impact properties even after irradiation because no radiation hardening and no change of impact properties under these irradiation conditions were observed. (author)
Availability note (English)
Available from JICST Library (JICST: Japan Science and Technology Corporation, Information Center for Science and Technology), P.O. Box 10 Hikarigaoka, Tokyo 179-9810 Japan, FAX: +81-3-3979-4781, JICST Service Homepage: www.jst.go.jp/EN/Additional details
Publishing Information
- Imprint Pagination
- 44 p.
- Report number
- JNC-TN--9400-2003-028
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 34072654
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- ANISOTROPY; CHARPY TEST; IMPACT STRENGTH; IRRADIATION; JOYO REACTOR; MARTENSITIC STEELS; MICROSTRUCTURE; NEUTRON BEAMS; PHASE TRANSFORMATIONS; POST-IRRADIATION EXAMINATION; TEMPERATURE DEPENDENCE
- Descriptors DEC
- ALLOYS; BEAMS; BREEDER REACTORS; CARBON ADDITIONS; DESTRUCTIVE TESTING; EPITHERMAL REACTORS; EXPERIMENTAL REACTORS; FAST REACTORS; FBR TYPE REACTORS; IMPACT TESTS; IRON ALLOYS; IRON BASE ALLOYS; LIQUID METAL COOLED REACTORS; LMFBR TYPE REACTORS; MATERIALS TESTING; MECHANICAL PROPERTIES; MECHANICAL TESTS; NUCLEON BEAMS; PARTICLE BEAMS; POWER REACTORS; REACTORS; RESEARCH AND TEST REACTORS; STEELS; TESTING; TRANSITION ELEMENT ALLOYS
Optional Information
- Notes
- 30 refs., 20 figs., 20 tabs.