HYDROGEN INTERACTION WITH STAINLESS STEEL 12Crl8NilOTi CONTAINING RADIOGENIC ~3He

摘要

Mechanical properties, structural changes and hydrogen interactions with stainless steel 12Cr18Ni10Ti subjected to accelerated radiogenic He buildup by means of "tritium trick" technique were studied. After saturation with tritium up to equilibrium concentration at a pressure 50 MPa and T=773 K the samples were rapidly cooled to room temperature and aged at this temperature up to the buildup of a predetermined ~3He concentration. Kinetics of helium thermal release, hydrogen transport, trapping and accumulation in steel containing various concentration of ~3He, synergistic influence of He and hydrogen on mechanical properties of steel containing up to 500 appm ~3He and structural changes at various ~3He concentrations are discussed.