New insights into microstructure of irradiated beryllium based on experiments and computer simulations.

ABSTRACT: The microstructural response of beryllium after neutron irradiation at various temperatures (643-923 K) was systematically studied using analytical transmission electron microscope that together with outcomes from advanced atomistic modelling provides new insights in the mechanisms of microstructural changes in this material. The most prominent feature of microstructural modification is the formation of gas bubbles, which is revealed at all studied irradiation temperatures. Except for the lowest irradiation temperature, gas bubbles have the shape of thin hexagonal prisms with average height and diameter increasing with temperature. A high number density of small bubbles is observed within grains, while significantly larger bubbles are formed along high-angle grain boundaries (GB). Denuded

SUBMITTER: Klimenkov M 

PROVIDER: S-EPMC7229013 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature