Joining of Zr-based bulk metallic glasses using the friction welding method

Friction welding of Zr-based bulk metallic glass (Zr55Al10Ni5Cu30 alloy) has been tried. Friction time and friction pressure were chosen as the control parameters for the friction welding process. Their influences on the shape and volume of the protrusion formed from the welded interface were investigated. Temperature distribution around the interface during friction welding was measured using an infrared thermal imager. Successful joining of Zr55Al10Ni5Cu30 BMG was accomplished through the precise control of friction time and friction pressure. Whether crystallization occurred or not during friction welding correlated to the volume of the protrusion formed at the welded interface.