|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Materials and Fuels for the Current and Advanced Nuclear Reactors V
||Helium Behavior after Thermal Treatment in V and Fe-based Systems
||Sofia Maria Gorondy Novak, François Jomard, Michael Walls, Nathalie Brun, Frédéric Prima, Hélène Lefaix-Jeuland
|On-Site Speaker (Planned)
||Sofia Maria Gorondy Novak
Vanadium and Iron-based alloys are potential candidates for future nuclear reactors due to their ballistic damage resistance. However, helium effects on microstructural and mechanical properties limit strongly the performance of these structural materials. Therefore, it is important to predict the thermodynamics and kinetic mechanisms involved in helium bubble nucleation and growth.
Pure V and Fe samples were implanted with 4He ions at 45 and 60 keV, respectively, at RT up to 1x1016 to 5x1016 ions/cm2 . These samples were then heated at different temperatures ranging from 400°C to 1000°C. Subsequently, multiple techniques were used to characterize the helium behavior after thermal treatment. SIMS and HI-ERDA were employed to profile He from the surface to about 1 μm in depth. TEM was applied on cross-sections of the samples to characterize the bubble distribution. In addition, the He pressure inside the bubbles was followed by EELS.
||Planned: A print-only volume