Aluminum base copper-lithium-magnesium welding alloy for welding

Details Aluminum base copper-lithium-magnesium welding alloy for welding Aluminum base copper-lithium-magnesium welding alloy for welding

1988-03-24

1989-07-18

Ramsey, Kenneth J.

Metal fusion bonding

Process

Critical work component, temperature, or pressure

420532, 420533, 420535, B23K 3530, C22C 2116

Patent

active

048486477

ABSTRACT:
A welding alloy is disclosed for welding together an aluminum-lithium alloy to provide a weld characterized by insensitivity to weld cracking, good resistance to weld corrosion, and the ability to develop high weld strength during subsequent aging. The welding alloy consists essentially of an aluminum base alloy containing from about 4.5 to about 6.5 wt. % Cu, from about 0.2 to about 1.5 wt. % Mg, from about 0.8 to about 2.5 wt. % Li, and from about 0.07 to about 0.20 wt. % Ti; with the following maximum amounts of specific impurities: about 0.15 wt. % Si, about 0.30 wt. % Fe, about 0.3 wt. % Zn, and about 0.3 wt. % Mn; the balance consisting essentially of aluminum and not more than about 0.15 wt. % max. total of other impurities.

REFERENCES:
patent: 4594222 (1986-06-01), Heck et al.
patent: 4626409 (1986-12-01), Miller
patent: 4735774 (1988-04-01), Narayanan et al.
"The Weldability of Al-5Mg-2Li-0.1Zr Alloy 01420" by J. R. Pickens, T. J. Langan and E. Barta.

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