Welding aluminium alloys

Details Welding aluminium alloys Welding aluminium alloys

1988-02-26

1990-07-24

McDowell, Robert

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

22826317, 427423, B32B 1501, B32B 1520

Patent

active

049434926

ABSTRACT:
Welded structures composed of aluminium alloy components are protected from white zone and exfoliation corrosion by means of a surface layer applied over the weld bead and consisting of an aluminium alloy containing 0.02 to 0.4% by weight of indium. Other elements which may be present include zinc 0.1 to 1.5%; manganese, 0.02 to 0.5%; tin, 0.12 to 0.50%; gallium, 0 to 0.2%; and magnesium, 0.01 to 6%. The surface coating may be applied by arc or flame spraying or by welding.

REFERENCES:
patent: 2797174 (1957-06-01), Mozley et al.
patent: 4196262 (1980-04-01), Pryor et al.
patent: 4558695 (1985-12-01), Kumazawa et al.
Holroyd et al., "Protection of Al-Zn-Mg Welds Against Exfoliation and Stress Corrosion Cracking Using Aluminum Based Metal Spray Coatings", presented Dec. 2-6, 1985, published by American Society for Metals, Metals/Materials Technology Series.
Holroyd et al., "Prevention of Weld Toe Cracking and Exfoliation Corrosion in Al-Zn-Mg Welds", Third Intl. Conf. Environmental Degradation of Engineering Materials, Penn State Univ., Apr. 13-15, 1987.
J. T. Reding et al., "The Influence of Alloying Elements on Aluminum Anodes in Sea Water," Materials Protection, 5, 15-18 (1966).

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