The Paton Welding Journal, 2002, №12

2002 №12 (07)

2002 №12 (09)

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The Paton Welding Journal, 2002, #12, 39-42 pages

Prevention of formation of oxide films in welds on Li-containing aluminium alloys

A.G. Poklyatsky, A.V. Lozovskaya, A.A. Grinyuk

E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
Effect of different technological factors on formation of extended filamentary inclusions of oxide films in TIG welds on Li-containing aluminium alloys is considered. It is suggested that these defects are caused primarily by a higher melting temperature of filler metal, compared with base metal. Recommendations allowing production of quality welded joints on Li-containing aluminium alloys are given.
Keywords: argon-arc welding, lithium-containing aluminium alloys, tungsten electrode, oxide film, filler wire, pre¬heating, asymmetric current, secondary phases

References

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9. Ryazantsev, V.I., Fedoseev, V.A., Grishin, V.V. et al. (1982) Influence of methods for preparation of mating surfaces on formation of pores in aluminium-magnesium-lithium alloy. Ibid., 6, 53−54.
10. Chayun, A.G. (1980) Welding of 01420 aluminium alloy with metallic flexible weld backing. Ibid., 8, 72−73.
11. Ilyushenko, R.V. (1990) Influence of pulsed argon-arc welding parameters on porositv of 1420 allov joints. Ibid., 9, 27−30.
12. Rabkin, D.M. (1986) Metallurgy of fusion welding of aluminium and its alloys. Kyiv: Naukova Dumka.

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Suggested Citation

A.G. Poklyatsky, A.V. Lozovskaya, A.A. Grinyuk (2002) Prevention of formation of oxide films in welds on Li-containing aluminium alloys. The Paton Welding J., 12, 39-42.

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