Fabrication of Open-cell Al Foam Core Sandwich by Vibration Aided Liquid Phase Bonding Method and Its Mechanical Properties

The open-cell Al foam core sandwiches (AFCSs) were successfully fabricated by using a specially designed Zn-Al-Cu based filler alloy via vibration aided liquid phase bonding method. The effects of the vibration on the bonding seam were investigated and the bonding strength between Al foam core and solid Al alloy face sheet was tested by shearing tests. The results show that vibration can significantly improve the quality of the bonding and the shearing strength of the bonding seam, which implies that this joining method has a good potential in practical applications.