Dv. Dunford et Pg. Partridge, TRANSIENT LIQUID-PHASE DIFFUSION BONDING OF 8090-AL-LI ALLOY USING COPPER INTERLAYER, Materials science and technology, 14(5), 1998, pp. 422-428
Transient liquid phase (TLP) diffusion bonded (DB) joints hare been pr
oduced in 8090 aluminium alloy (of nominal composition (wt-%) Al-25Li-
1.3Cu-08Mg-0.12Zr-0.1Fe-0105Si) using copper interlayers. Transient li
quid phase formation and melt solidification were controlled by solid
state diffusion of copper along Al-Li alloy grain boundaries. The shea
r strengths of the TLP DB joints were comparable with the shear streng
ths of solid state DB joints and greater than 90% of that of the base
metal. (C) Crown Copyright DERA, 1998.