Investigations of radiation resistance of fission and fusion structural materials in RRC KI using charged particle accelerators
by
Prof.Alexander Ryazanov(RRC KI Moscow)
→
Europe/Zurich
WBGB/019 (PSI)
WBGB/019
PSI
Description
Radiation resistance of fission and fusion structural materials is characterized by such phy-sical phenomena as radiation swelling and creep, radiation hardening, helium and hydrogen embrit-tlement. All these physical phenomena depend on microstructure changes in irradiated structural materials, which are determined by the generation rate of point defects, cascade efficiency, irradiation temperature and dose dependence. All these values can be obtained and reproduced at differ-rent temperatures using accelerators of charged particles. Experimental tests in atomic reactors are very expensive and time consuming. The irradia-tion of these materials by fast charged particles with accelerators allow to obtain representive experimental data concerning radiation resistance of structural materials in a short time as compared to reactor based methods and without high activation levels on irradiated samples. Each physical phenomenon can be studied at fixed temperatures and varying irradiation doses. A re-view of experimental methods and results concerning radiation swelling and creep, helium embrittlement phenomena obtained on accelera-tors of RRC KI for different types of structural materials for fission and fusion reactors, including modern theoretical models will be presented. New experimental methods and results for the analysis of micro-structure changes in irradiated materials including X-ray methods using synchrotron light sources and transmission electron microscopy will be discussed as well.
Contact: Mike Seidel (3378)
