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Swelling and Helium Bubble Morphology in a Cryogenically Treated FeCrNi Alloy with Martensitic Transformation and Reversion after Helium Implantation [PDF]
Materials, 2019 A cryo-quenched 70 wt % Fe-15 wt% Cr-15 wt% Ni single-crystal alloy with fcc (face centered cubic), bcc (body centered cubic), and hcp (hexagonal close packed) phases was implanted with 200 keV He+ ions up to 2 × 1017 ions·cm−2 at 773 K. Surface-relief features were observed subsequent to the He+ ion implantation, and transmission electron microscopy ...
Feifei Zhang +2 more
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Helium content and induced swelling of neutron irradiated beryllium
Fusion Engineering and Design, 1995The effects of neutron irradiation on beryllium in terms of helium generation and induced swelling have been studied. Beryllium samples were irradiated in the Belgian materials testing reactor BR2 at low temperature (40-50°C) up to 20 000 appm He (for a fission neutron fluence of 5.3×10 22 n cm -2 ).
L. Sannen +3 more
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Swelling and stacking fault formation in helium implanted SiC
Journal of Nuclear Materials, 2011Abstract Effects of annealing on surface swelling in helium implanted 4H–SiC were studied for different implant conditions. The significant increase of surface swelling observed upon high temperature annealing of samples implanted under severe implant conditions (high temperature and fluence) is observed to be concomitant with the growth of cavities ...
J.F. Barbot +3 more
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Swelling of metallic surfaces irradiated by helium ions
Radiation Effects, 1983Abstract At doses close to threshold for exfoliation or bubble formation the surfaces have been investigated by SEM and, after isolation of surface layers, also by RBS. Swelling as a function of energy and material has been determined. The data are interpreted in the form of volume occupied by a helium atom.
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Advances in void swelling and helium bubble physics
Journal of Nuclear Materials, 1984Abstract The extensive experimental data base on irradiated austenitic alloys reveals that swelling as a function of dose can be divided into an initial transient period of low swelling rate, followed eventually by a rate of about 1%/dpa. Whereas the transient depends strongly on microstructure, temperature, and composition, the final rate of ...
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Correlation of swelling with local gas concentration in helium irradiated niobium
Nuclear Instruments and Methods, 1980Abstract Further analysis of the swelling of Nb under He irradiation at 5–25 keV reveals that the swelling is directly proportional to total fluence retained, i.e. 2 × 10 −23 cm 3 /He atom, irrespective of the energy (and hence of the width and shape of the He distribution).
R.G. Saint-Jacques +2 more
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Effect of helium production on swelling of F82H irradiated in HFIR
Journal of Nuclear Materials, 2000Abstract The effects of helium production and heat treatment on the swelling of F82H steel irradiated in the HFIR to 51 dpa have been investigated using 10B, 58Ni and 60Ni-doped specimens. The swelling of tempered F82H-std and F82H doped with 10B irradiated at 400°C ranged from 0.52% to 1.2%, while the swelling of the non-tempered F82H doped with ...
E Wakai +6 more
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Effect of helium on the swelling of GlidCop Al25 IG alloy
Journal of Nuclear Materials, 2002Abstract This report presents data on the effect of neutron irradiation up to 0.5 dpa in the mixed spectrum SM-2 reactor at Tirr≈160 and ≈295 °C and on the TEM microstructure of GlidCop Al25 IG oxide dispersion strengthened copper after different heat treatments (CR+annealed, HIP).
S.A Fabritsiev +3 more
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Effects of helium on void swelling in boron doped V–5Fe alloys
Journal of Nuclear Materials, 1998Abstract The effects of helium on void swelling in V–5Fe were investigated with natural boron-doping techniques during FFTF/MOTA (Fast Flux Test Facility/Materials Open Test Assembly) irradiation. Microstructural observation was carried out to understand the swelling behavior obtained from density measurements.
Takeo Iwai, Naoto Sekimura, F.A. Garner
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To a question of temperature driven gas swelling in helium doped ferritic alloys
Journal of Nuclear Materials, 2020Abstract Samples of three different ferritic steels: conventional AISI410S and two experimental oxide dispersion-strengthened alloys Сr16ODS and EP450ODS, were uniformly ion-doped with helium to concentrations of 0.2 and 1 at% and annealed in vacuum at 1023K.
A.S. Sohatsky +6 more
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