Abstract
This invention provides a welding method for Sc-Zirconium based ((Zr55Cu30Ni5Al10)100-xScx, 0. 01 ≤ x ≤ 0. 8in atomic percent) bulk metallic glass (BMG). The method shows the bead on rod can be conducted by using pulsed gas tungsten arc welding coupled with a critical cooling acceleration ≥ 200 DEG K on the surface of rod or joining two piece of rods. The process can produce successfully an amorphous weld metal, without crystallization in the fusion zone, same as the parent amorphous metal of Sc-zirconium based BMG. In addition, this methodology provides a BMG welds having a uniform microstructure and mechanical property. This invention extends significantly to the application of BMG in structural joining and packaging.