Investigation of plasticity nucleation in metals and alloys under irradiation and mechanical loading is one of the actual problems of materials science. Features of nucleation and evolution of defect system in stressed iron, vanadium and copper crystallites under irradiation are studied by molecular dynamics simulations. Crystallite volume was constant during deformation of specimens. Energy of primary knock-on atom forming atomic displacement cascade in stressed specimens is varied from 0.05 to 50 keV. It was found that atomic displacement cascades in such crys-tallites may cause global structural changes in region greater than radiation damaged zone. These changes are similar to ones taking place during mechanical loading of specimens. They are realized by twinning in iron and vanadium and by formation of partial dislocation loops in copper.
|Журнал||Problems of Atomic Science and Technology, Series Thermonuclear Fusion|
|Состояние||Опубликовано - 2015|
ASJC Scopus subject areas
- Condensed Matter Physics
- Nuclear and High Energy Physics
- Nuclear Energy and Engineering