Nikitin A. Blistering of ferritic-martensitic steel and iron under the influence of particles of low-energy hydrogen plasma

The dissertation is devoted to the determination of physical law of the phenomena of blistering and cracking and the determination of regularities of their development under the influence of particle fluxes from the low-energy hydrogen plasma in EP-450 ferritic-martensitic steel and the model material - -iron, as well as the identification of structural factors contributing to the suppression of cracking. The temperature and dose dependencies of blisters and cracks formation in EP-450 steel are established. The effect of deformation on the occurrence and passing of these processes is studied, as well as the influence of the initial structure on the development and suppression of blistering in ferritic-martensitic steel. It is shown that blistering and cracking will make the greatest contribution to the degradation of structure of ferritic-martensitic steel when the surface temperature drops to ~ 373 K, that may occur during the emergency shutdown of a fusion reactor.