TY - JOUR
T1 - Mechanical property changes and defect structures of Ni and Fe irradiated with fission and fusion neutrons
AU - Okada, A.
AU - Kanao, K.
AU - Satoh, Y.
AU - Kojima, S.
AU - Yoshiie, T.
AU - Kiritani, M.
N1 - Funding Information:
* Partly in Japan/US Cooperation Program on Collaboration in the RTNS-II Utilization sponsored by Japanese Ministry of Education, Science and Culture.
PY - 1988/7/2
Y1 - 1988/7/2
N2 - The correlation between the fission and 14-MeV D-T fusion neutron irradiation effects on the mechanical property changes is discussed for Ni and Fe with reference to the defect structures induced by the irradiation. In Ni irradiated with fission and fusion neutrons at 470 K, no significant difference in size distribution was found in the defect structures of small SFTs (stacking fault tetrahedra) and dislocation loops except for the absolute value of their number density and the dependence of the change in the yield stress on the defect number density is the same. In irradiations at higher temperatures, 720 K in RTNS-II and 670 and 770 K in Joyo, the dominant defect clusters are SFTs in RTNS-II and voids in Joyo irradiation. The difference in the amount of the yield stress increase for the same defect number density is understood from the difference in the defect cluster species. The dependence of the yield stress on the fluence in Fe was discussed on the basis of the results of Ni.
AB - The correlation between the fission and 14-MeV D-T fusion neutron irradiation effects on the mechanical property changes is discussed for Ni and Fe with reference to the defect structures induced by the irradiation. In Ni irradiated with fission and fusion neutrons at 470 K, no significant difference in size distribution was found in the defect structures of small SFTs (stacking fault tetrahedra) and dislocation loops except for the absolute value of their number density and the dependence of the change in the yield stress on the defect number density is the same. In irradiations at higher temperatures, 720 K in RTNS-II and 670 and 770 K in Joyo, the dominant defect clusters are SFTs in RTNS-II and voids in Joyo irradiation. The difference in the amount of the yield stress increase for the same defect number density is understood from the difference in the defect cluster species. The dependence of the yield stress on the fluence in Fe was discussed on the basis of the results of Ni.
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U2 - 10.1016/0022-3115(88)90515-6
DO - 10.1016/0022-3115(88)90515-6
M3 - Article
AN - SCOPUS:0024035307
VL - 155-157
SP - 1301
EP - 1304
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
IS - PART 2
ER -