Characterization of the Microstructure and Bonding Properties ofZirconium-Carbon Steel Clad Materials by Explosive Welding

An investigation was carried out to characterize the microstructure and bonding properties of the zirconium-carbon steel explosiveclad. The microstructure and the composition of the clad were characterized using optical microscopy and scanning electronmicroscopy. Bonding properties were inspected by using bending and shearing tests. The examination results indicate that theR60702 and Cr70 plates were joined successfully without visible defects. The interface wave is symmetrical. There is no elementdiffusion across the interface of the clad plate. There are melt blocks at the interface. Bending and shearing test results indicate thatthe bonding properties of the clad meet the requirements of the ASTM B898 specification. and after shell rolling, no delaminationappeared at the interface. Thus, it indicates that the clad plates have good bonding quality and meet the processing requirement.