Electron beam welding of the dissimilar Zr-based bulk metallic glass and Ti metal

We successfully welded 3 mm thick Zr41Be23Ti14Cu12Ni10 bulk metallic glass plate to Ti metal by electron beam welding with a beam irradiated 0.4 mm on the BMG side of the interface. There was no crystallization or defects in the weld because changes in the chemical composition of the weld metal were prevented. Bending showed that the welded sample had a higher strength than the Ti base metal. The interface had a 10 μm thick interdiffusion layer of Zr and Ti.