The change of the proof stress Δσ0.2 of copper 99.998 wt% after irradiation by boron, neon and argon ions with energy 115,227 and 433 MeV respectively is studied. The proof stress reaches saturation as the radiation dose is increased. A simple model is given for the description of Δσ-0.2 after irradiation by neutrons with energy 14 MeV and by heavy ions. The saturation effect is explained. The model is based on the assumption that, at the irradiation temperature, interstitial atoms are mobile and their annihilation with vacancy clusters can lead to dynamic equilibrium of the concentration of vacancy type clusters.
|Number of pages||9|
|Journal||Physics of Metals and Metallography|
|Publication status||Published - Dec 1 1991|
ASJC Scopus subject areas
- Condensed Matter Physics
- Materials Chemistry