The Paton Welding Journal, 2001, №09

2001 №09 (10)

2001 №09 (02)

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The Paton Welding Journal, 2001, #9, 4-7 pages

Physical simulation of heat processes in HAZ metal during welding aluminium-lithium alloys

A.Ya. Ishchenko, A.V. Lozovskaya, I.E. Sklabinskaya

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

Abstract
Microstructure, hardness and strength of samples of alloys 1420, 1460 and 1201 produced by the method of simulation of conditions of metal heating in HAZ during fusion welding were studied, including those after additional artificial ageing. It was found that the highest solid solution resistance is characteristic of alloy 1420 (Al-Mg-Li system) which is less susceptible to the metal annealing in HAZ. Alloy 1201 (Al-Cu-Mn system) is mostly weakened in HAZ, its annealing proceeds in the wide temperature range, and properties in this zone are recovered at artificial ageing to the lowest degree as compared with alloys 1420 and 1460 (Al-Cu-Li system).
Keywords: simulation, welding, heat-affected zone, structural transformations, weakening, heat treatment, hardness, strength, structure, strengthening phases, recovery, an nealing, ageing

References

1. Davydov, V.G., Zakharov, V.V., Zakharov, E.D. et al. (1973) Diagrams of isothermal decay of solution in aluminium alloys. Moscow: Metallurgia.
2. Dewmolt, S.D., Laflin, D.E., Williams, J.K. (1984) Effect of welding on microstructure of heat-treated alloy 2219. In: Proc. of Sov. -US Seminar on Welding of aluminium alloys of cryogenic and general purpose. Kyiv: Naukova Dumka.
3. Golder, Yu.G., Grishina, V.M., Doronina, V.E. et al. (1978) Handbook on aluminium alloys. Moscow: VILS.

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Suggested Citation

A.Ya. Ishchenko, A.V. Lozovskaya, I.E. Sklabinskaya (2001) Physical simulation of heat processes in HAZ metal during welding aluminium-lithium alloys. The Paton Welding J., 09, 4-7.

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