Preparation and study on the properties of bulk amorphous alloy Fe78Si9B13 by ultrasonic welding

摘要

The low temperature, low pressure and low energy consumption associated with ultrasonic welding make it suitable for solid state joining of multi-layer Fe78Si9B13 amorphous alloy foil. In this study, surface and volume effects created by ultrasonic welding process have been successfully utilized to prepare bulk amorphous alloys. The thermodynamic properties of materials and welding transient temperature distributions were analyzed using the welding joint structure and morphology, to determine the optimum parameters of ultrasonic welding: n=5;A=35 mu m; f=20 kHz; F=1.37x10(3)N; t=220nns. Based on the material model and heat source model of amorphous alloy foil, an axisymmetric thermal - structural finite element model of multi-layer Fe78Si9B13 amorphous foil was developed for ultrasonic welding. The FEM model was prepared using a finite element analysis software ANSYS to simulate the ultrasonic welding process of multi-layer Fe78Si9B13 amorphous foil. The current study demonstrates, through experimental data, the effect of different welding times on the temperature field distribution of multi-layer foils during ultrasonic welding of multilayer alloy foils.