Search Results - "Sekimura, N."

Role of nickel and manganese in recovery of resistivity in iron-based alloys after low-temperature proton irradiation by Murakami, K., Iwai, T., Abe, H., Sekimura, N., Katano, Y., Iwata, T., Onitsuka, T.

“…This study investigates the recovery of electric resistivity in pure iron, Fe-0.6Ni and Fe-1.5Mn as related to isochronal annealing following 1 MeV proton…”
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Swelling of pure vanadium and V-5Cr at ∼430°C in response to variations in neutron flux-spectra in FFTF by Garner, F.A., Okita, T., Sekimura, N.

“…When irradiated at ∼400–436°C in the FFTF fast reactor, pure vanadium swells more than does V-5Cr, a behavior opposite of that observed at 500–600°C. The…”
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Effects of dpa rate on swelling in neutron-irradiated Fe–Cr and Fe–Cr–Mo alloys by Okita, T., Sekimura, N., Garner, F.A.

“…Data are presented on the void swelling of three model Fe–Cr ferritic alloys following irradiation in TEM packets in FFTF–MOTA over the range 373–600°C and a…”
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The synergistic influence of temperature and displacement rate on microstructural evolution of ion-irradiated Fe–15Cr–16Ni model austenitic alloy by Okita, T., Sato, T., Sekimura, N., Iwai, T., Garner, F.A.

“…An experimental investigation of microstructural evolution has been conducted on Fe–15Cr–16Ni irradiated with 4.0 MeV nickel ions. Irradiations proceeded to…”
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Interaction mechanisms of glissile loops in FCC systems by the elastic theory by Okita, T., Fujita, S., Yang, Y., Sekimura, N.

“…The elastic theory calculations are conducted to clarify the interaction between a large dislocation loop and a small glissile loop in face-centered-cubic…”
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The primary origin of dose rate effects on microstructural evolution of austenitic alloys during neutron irradiation by Okita, T, Sato, T, Sekimura, N, Garner, F.A, Greenwood, L.R

“…The effect of dose rate on neutron-induced microstructural evolution was experimentally estimated. Solution-annealed austenitic model alloys were irradiated at…”
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The conflicting roles of boron on the radiation response of precipitate-forming austenitic alloys at ∼400 °C by Okita, T., Sekimura, N., Garner, F.A.

“…The behavior of void swelling at ∼400 °C of model f.c.c. alloy Fe–15Cr–16Ti–0.25Ti–0.05 C doped with boron was examined in the FFTF–MOTA. Boron additions…”
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Influence of carbon addition on neutron-induced void swelling of Fe–15Cr–16Ni–0.25Ti model alloy by Sekimura, N., Okita, T., Garner, F.A.

“…Addition of 0.05 wt% C to a model Fe–15Cr–16Ni–0.25Ti quaternary model alloy leads to a reduction in neutron-induced swelling at 430 °C. The transient regime…”
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Synergistic influence of displacement rate and helium/dpa ratio on swelling of Fe–(9, 12)Cr binary alloys in FFTF at ∼400 °C by Garner, F.A, Gelles, D.S, Greenwood, L.R, Okita, T, Sekimura, N, Wolfer, W.G

“…Contrary to the behavior of swelling of model fcc Fe–Cr–Ni alloys irradiated in the same FFTF-MOTA experiment, model bcc Fe–Cr alloys do not exhibit a strong…”
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Detection of point defects upon ion irradiation by means of precipitate coherency by Li, Z.C., Abe, H., Sekimura, N.

“…Transmission electron microscopy has been widely used to investigate the radiation-damage microstructures, but has limitations when observing point defects due…”
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Influence of boron on void swelling in model austenitic steels by Okita, T, Wolfer, W.G, Garner, F.A, Sekimura, N

“…Model austenitic steels based on Fe–15Cr–16Ni with additions of 0.25Ti, 500 appm B, or 0.25Ti–500 appm B were irradiated in FFTF/MOTA over a wide range of dose…”
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Effects of titanium additions to austenitic ternary alloys on microstructural evolution and void swelling by Okita, T., Wolfer, W. G., Garner, F. A., Sekimura, N.

“…Ternary austenitic model alloys were modified with 0.25 wt.% titanium and irradiated in the Fast Flux Test Reactor (FFTF) at dose rates ranging over more than…”
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Temperature annealing of tracks induced by ion irradiation of graphite by Liu, J., Yao, H.J., Sun, Y.M., Duan, J.L., Hou, M.D., Mo, D., Wang, Z.G., Jin, Y.F., Abe, H., Li, Z.C., Sekimura, N.

“…Highly oriented pyrolytic graphite (HOPG) samples were irradiated by Xe ions of initial kinetic energy of 3MeV/u. The irradiations were performed at…”
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Synergistic effects of hydrogen and helium on microstructural evolution in vanadium alloys by triple ion beam irradiation by Sekimura, N, Iwai, T, Arai, Y, Yonamine, S, Naito, A, Miwa, Y, Hamada, S

“…In fusion materials, irradiation of 14 MeV neutrons produces He and H atoms at a high generation rate. The objective of this study is to clarify synergistic…”
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Effects of Ion Irradiation on Coherency of Precipitates in Cu–Co Alloy by Li, Z. C., Abe, H., Ishikawa, M., Sekimura, N.

“…Typical precipitation Cu–Co alloy has been selected to investigate the formation and mobility of point defects upon ion irradiation, during which the coherent…”
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Effects of dose rate on microsturctural evolution and swelling in austenitic steels under irradiation by Okita, T, Kamada, T, Sekimura, N

“…Effects of dose rate on microstructural evolution in a simple model austenitic ternary alloy are examined. Annealed specimens are irradiated with fast neutrons…”
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Modeling of cascade damage interactions by Monte-Carlo method by Sekimura, N, Morioka, T, Morishita, K

“…The effect of interactions of cascade damage on clustering and point-defect behavior in α-iron at 563 K is simulated by the Monte-Carlo (MC) method. Cascade…”
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A molecular dynamics simulation study of small cluster formation and migration in metals by Morishita, K, Diaz de la Rubia, T, Alonso, E, Sekimura, N, Yoshida, N

“…Molecular dynamics (MD) simulations were performed to investigate the kinetics and energetics of self-interstitial atom (SIA) clusters in vanadium, tantalum…”
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New insights into the temperature effects on neutron irradiation of structural materials by Muroga, T, Sekimura, N

“…An overview is presented on the recent development and the new issues for mechanistic understanding of neutron radiation effects, placing emphasis on the…”
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Defect cluster formation in vanadium irradiated with heavy ions by Sekimura, N, Shirao, Y, Yamaguchi, H, Yonamine, S, Arai, Y

“…Irradiation data of vanadium alloys have been accumulated by intensive irradiation experiments in fission reactors. In evaluating irradiation performance of…”
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