Regresar

Influence of temperature and compressive stress on the UMo/Zry-4 interdiffusion layer

Abstract:

The miniplates fabrication process involves the co-rolling at high temperatures of a welded ensemble made up of a monolithic Uranium-Molybdenum (UMo) core surrounded by a frame and two Zircalloy-4 (Zry-4) covers. The alloys employed in this work contained 10% (mass) of Molybdenum (Mo). Temperature and compressive stress are both important parameters in the co-rolling process, since they can modify the interaction between components. Not only is a thicker interlayer obtained when working at 800 °C, but also regions rich in Molybdenum. A thin interlayer appeared at 650 °C, deep enough to correctly bond both materials. However, no regions rich in Molybdenum are observed in these conditions. When working with a high compressive stress, the results were similar to those obtained at 800 °C. Compared to the co-rolling process, the interlayer obtained in diffusion couple samples (prepared by attaching …