Radiation Effects of F82H JLF-1

摘要

Irradiation programs of RAF/M in EU, Japan and US are summarized. F82H and JLF-1 are included in Japanese and US irradiation programs. F82H is also adopted in the EU programs. F82H and JLF-1 have been irradiated in HFIR, JMTR, JRR-2, JRR-3, FFTF, EBR-II and ATR. Another domestic reactor, JOYO, is also considered in the future program. Thus accumulated data may suggest the saturation in DBTT shift of 300 C irradiated F82H around 0 C at 1 dpa, but recent data from EU irradiation program show that is not the case. Another topic in recent results is the tensile properties of welded F82H. Irradiation hardening of the weld joint type specimen, measured in 0.2% proof stress, was smaller than those of base metal or weld metal specimens, suggesting less irradiation hardening in the tempered area of HAZ.