Ultrasonic welding of metals: instruments, process parameters, and prospects of welding of ultrafine grained materials

Abstract

The results of studies on the development of instruments for ultrasonic welding (USW) of metals, which is the basic process for ultrasonic additive manufacturing, are presented. The influence of process parameters (static loading and welding time) on the microstructure and strength of joints produced by USW of commercially pure copper, nickel and titanium is studied. Preliminary results of the first studies on the USW of metals in an ultrafine grained (UFG) state are presented and the prospects of using UFG metals in the ultrasonic additive manufacturing are evaluated.