|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Materials and Fuels for the Current and Advanced Nuclear Reactors V
||Swift Heavy Ion Irradiation Induced Interactions in the UMo/X/Al Trilayer System
||Hsin-Yin Chiang, Winfried Petry, S.-H. Park, M. Mayer, K. Schmid, M. Balden, U. Boesenberg, R. Jungwirth, G. Falkenberg, Tobias Zweifel
|On-Site Speaker (Planned)
Uranium-molybdenum (UMo) alloy embedded in an Al matrix is considered to be a promising candidate for fuel conversion of research reactors. However, an unfavorable interduffision layer forms at the interface during irradiation and strongly limits the irradiation performance. Different UMo/X/Al trilayer systems have been investigated to identify materials to suppress this interdiffusion. Testing with swift heavy ion irradiation revealed that such a diffusion barrier indeed limits the intermixing process: RBS indicated that Ti interacts strongly with UMo; Zr in turn reacts aggressively with Al. µ-XRD and STEM revealed the formation of intermetallic AlX compounds which can detain further atomic mixing. However, Ti and Zr as diffusion barrier could lead to γ-UMo decomposition. Nb and Mo interact with Al and form irradiation-induced compounds Nb3Al with poor crystallinity and Al12Mo, which is is in good crystalline state. Therefore, Mo is the most promising barrier material of the four analyzed transition metals.
||Planned: A print-only volume