Weld specimens of the reference low activation vanadium alloy, NIFS-HEAT-2, were irradiated up to the neutron fluence of 4.5times10 23 nm -2 (0.08 dpa) at 563 K in JMTR. The weld metal showed larger irradiation hardening than that of the base metal, and the weld metal showed an ...
the effect of post-weld heat treatment (PWHT) and post-irradiation annealing (PIA), electron-beam-weld specimens of the reference low activation vanadium alloy, NIFS-HEAT-2, were neutron-irradiated to a fluence of 7.62 脳 10 neutron m (E > 1 MeV) at 563 K in Belgian Reactor-2. In...
Dissimilar-metals joints between vanadium alloy NIFS-HEAT-2 (NH2) and nickel alloy Hastelloy X (HX) were developed by electron beam welding (EBW). If without filler, the joint fractured several minutes after the welding due to hard and brittle intermetallics formed in the weld metal (WM). ...
Gamma-ray peaks originated from other impurity elements were not observed in the spectra, and the present analysis are supporting the superior low activation properties of NIFS-HEAT-2.doi:10.1016/j.nme.2020.100782Teruya TanakaTakuya NagasakaTakeo Muroga...
In order to investigate the effect of post-weld heat treatment (PWHT) and post-irradiation annealing (PIA), electron-beam-weld specimens of the reference low activation vanadium alloy, NIFS-HEAT-2, were neutron-irradiated to a fluence of 7.62 x 10(23) neutron m(-2) (E > 1 MeV) at ...
Evaluation of activation properties of fusion candidate vanadium alloy NIFS-HEAT-2First Page of the ArticleTanaka, T.Satoa, S.Nagasaka, T.Muroga, T.Hori, J.Ochiai, K.Nishitani, T.Huang, Q.Fusion Engineering, 2003. 20th IEEE/NPSS Symposium on...
Creep rupture properties of helium implanted V–4Cr–4Ti alloy NIFS-HEAT-2[J] . Toshinori Chuto,Norikazu Yamamoto,Johsei Nagakawa,Yoshiharu Murase.Journal of Nuclear Materials . 2004Chuto, T.; Yamamoto, N.; Nagakawa, J.; Murase, Y. Creep rupture properties of helium implanted V-4Cr-4Ti...
Fluoridation and oxidation characteristics of JLF-1 and NIFS-HEAT-2 low-activation structural materials[J] . Takuya Nagasaka,Masatoshi Kondo,Takeo Muroga,Nobuaki Noda,Akio Sagara,Osamu Motojima,Akihiro Suzuki,Takayuki Terai.Journal of Nuclear Materials . 2009...
The influence of transmutational helium on creep response of a V–4Cr–4Ti reference alloy called NIFS-HEAT-2 was examined. This is a candidate structural material for future fusion applications. Helium ions were injected into creep specimens at 700 °C to a concentration of about 100 appm ...
The Charpy impact properties and microstructure of bead-on-plate electron beam welds of V–4Ti–4Cr alloys NIFS-HEAT-2 (NH-2) and CEA-J57 (J57) were investigated. Weld metal of both grades demonstrated increase in hardness (HV100180) in comparison with base metal (HV100135) due to ...