High-purity α-titanium was implanted with helium to observe cavity morphology–size,
number density, and form (ie, bubbles vs. voids)–effects on materials strength. Increasing …

A reduced activation martensitic steel (F82H), Fe− 8Cr ferrite model steel (8CrFS) and pure
iron (Fe) were irradiated with 6.4 MeV Fe 3+ ions at 300° C to a displacement damage of 30 …

Nanoindentation has been performed on tungsten, unimplanted and helium-implanted to~
600 appm, at temperatures up to 750° C. The hardening effect of the damage was 0.90 GPa …

In this study, molecular dynamics simulations were employed to study the interaction
between dislocations with Fe-V precipitate with different vanadium concentrations …

Voids, helium bubbles and stacking fault tetrahedra (SFTs) are common irradiation-induced
defects in face-centered cubic (FCC) metals and their alloys that have detrimental effects on …

With exposure to high-energy particle irradiation, structural metals develop a number of
nanoscale defects, one of which is the nano-sized He bubble. Formed throughout the …

In nuclear applications like fission, spallation and fusion, one of the main concerns is that the
structural materials must be able to withstand harsh irradiation conditions. In particular, in …

Mechanical responses of tungsten (W) and its alloys are strongly controlled by the properties
of 1/2< 111> screw dislocations. Rhenium (Re), as a typical alloying and transmutation …

We review here our recent work on plastic deformation in irradiated materials at the nano-
and micro-scales, as revealed by Discrete Dislocation Dynamics (DDD) simulations. Two …

Neutron and heavy-ion irradiation of tungsten produces nanometer-size vacancy voids, gas-
filled bubbles and dislocation loops. These defect features can affect mechanical properties …