2020 №07 (02) DOI of Article
2020 №07 (04)

Automatic Welding 2020 #07
Avtomaticheskaya Svarka (Automatic Welding), #7, 2020, pp. 25-31

Effect of heat treatment on the structure and mechanical properties of sheet aluminium alloy V1341 and its welded joints produced BY TIG welding

Labur T.M., Javorska M.R., Koval V.A.
E.O. Paton Electric Welding Institute of the NAS of Ukraine, 11, Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

The paper gives the results of studying the effect of various heat treatment operations on the structure and mechanical properties of the base metal and welded joints of sheet aluminium alloy of V1341 grade 1.2 mm thick, produced by manual nonconsumable electrode argon-arc welding. The dependence is established between the structural state of the metal of welded joints of this alloy on the kind of heat treatment that affects the level of strength and ductility. A significant effect of improvement of the structure and mechanical properties is achieved, when conducting complete heat treatment, which includes quenching and artificial ageing of the alloy and its joints. Compared to artificial ageing modes, this kind of heat treatment allows producing a stable metal structure, characterized by smaller dimensions of phase precipitates and inclusions, that promotes increase of the strength level, under the condition of preservation of the ductility values. 8 Ref., 2 Tab., 4 Fig.
Keywords: aluminium alloy, manual nonconsumable electrode argon-arc welding, filler wire, welded joints, heat treatment, structure, mechanical properties, investigations

Received: 08.07.2020


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