14 MeV neutron irradiation effects on the yield stress of highly perfect copper single crystals
Abstract
The dose-dependence of the critical resolved shear stress (τ crss) of highly perfect copper single crystals irradiated by 14 MeV neutrons was measured for neutron doses of less than 9.5 ×10 14 n/cm 2. The neutron irradiation was carried out at 298 K using RTNS-II at Lawrence Livermore National Laboratory. The tensile tests were carried out at 293 K. The increase in τ crss (Δτ crss, radiation hardening) due to 14 MeV neutron irradiation increased with increasing neutron dose and was proportional to the one-half power of neutron dose. Δτ crss in the crystals irradiated by 14 MeV neutrons was larger by a factor of about 2 than that in crystals irradiated by fission neutrons.
- Publication:
-
Journal of Nuclear Materials
- Pub Date:
- August 1985
- DOI:
- 10.1016/0022-3115(85)90237-5
- Bibcode:
- 1985JNuM..133..690S