The Paton Welding Journal, 2007, №03

2007 №03 (07)

2007 №03 (09)

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The Paton Welding Journal, 2007, #3, 31-33 pages

Mechanical properties of 1441 aluminium alloy joints produces by different welding processes

A.G. Poklyatsky, A.Ya. Ishchenko, A.A. Grinyuk, M.R. Yavorskaya

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

Abstract
Comparative analysis has been performed of the strength and hardness in Joints of 1441 aluminium alloy produced by fusion and friction stir welding. It is shown that the process of producing the Joint by metal plasticization without its melting allows avoiding formation of defects characteristic for the aluminium-lithium alloys and improving the tensile strength of welded Joints. It is found that the welds made by friction stir welding are non-symmetrical relative to their longitudinal axis. It is established that fracture of samples at static testing occurs from the side, from which the metal is driven by the working tip of the tool.
Keywords: arc welding, friction stir welding, aluminiumlithium alloys, strength, hardness, mechanical properties

References

1. Dmitriev, V.G., Zamula, G.N., Konovalov, V.V. et al. (2003) Priority trends of improvement of materials for structures of advanced aircraft. Tekhnologiya Lyog. Splavov, 1, 3–8.
2. Fridlyander, I.N., Sadkov, V.V., Sandler, V.S. et al. (2002) Properties of semi-finished products of advanced Al–Li alloy 1441. Ibid., 4, 24-26.
3. Ilyushenko, R.V. (1990) Influence of parameters of pulsed argon-arc welding on porosity of alloy 1420 joints. Avtomatich. Svarka, 9, 27–30.
4. Poklyatsky, A.G., Lozovskaya, A.V., Grinyuk, A.A. (2002) Prevention of formation of oxide films in welds on Li-containing aluminium alloys. The Paton Welding J., 12, 39–42.
5. Lozovskaya, A.V., Chajka, A.A., Bondarev, A.A. et al. (2001) Softening of high-strength aluminium alloys in different fusion welding processes. The Paton Welding J., 3, 13–17.
6. Dawes, C.J., Thomas, W.M. (1996) Friction stir process welded aluminum alloys. Welding J., 3, 41–45.
7. Stepanov, V.V., Konkevich, V.Yu., Frolov, V.A. (2003) Formation of joints in friction stir welding. Tekhnologiya Lyog. Splavov, 1, 58–67.

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Suggested Citation

A.G. Poklyatsky, A.Ya. Ishchenko, A.A. Grinyuk, M.R. Yavorskaya (2007) Mechanical properties of 1441 aluminium alloy joints produces by different welding processes. The Paton Welding J., 03, 31-33.

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