Diffusion Bonding in Fabrication TA2 Sheets Enhanced Aluminum Foam Sandwich

Aluminum foam sandwiches (AFSs) served as sheet materials have enormous marketing potential for their interesting combinations of excellent properties, such as low density, high specific strength, energy absorption and thermal insulation. In this paper, transient liquid phase (TLP) bonding method was used to prepare pure titanium sheet enhanced AFS (TS-AFS). Fabricated TS-AFS with the dimension of 80×80×18 mm3 presented uniform foam core, and bubbles ranged from 0 mm to 2 mm occupied the most area of cross section. Thickness of interface layer increased with the increase in the holding time. Additionally, metallic compounds of Al20CaTi2 and Al2Ti were detected at the bonding joint.