Nonuniform-to-uniform structural transitions induced by ultrasonic vibrations

Abstract

The action of ultrasonic vibration (UV) on material flow plays an important role in determining structures and properties of welding joints. Recent experiments and numerical simulations at the millimeter scale...

Mixing behavior of Ti–Al interface during the ultrasonic welding process and its welding strength: Molecular dynamics study

“…They also observed a structural change from fcc to an amorphous structure during the UW process. Recently, Li et al [ 18 ] investigated UW welding of Mg–Al nanolayers according to heat and ultrasonic vibrations. They reported that structure transitions and increasement of Mg–Ag interface thickness were observed under large vibration amplitudes and low vibration frequency due to facilitation of atomic diffusion and dislocations motions.…”