2021 №09 (04) DOI of Article
2021 №09 (06)

Automatic Welding 2021 #09
Avtomaticheskaya Svarka (Automatic Welding), #9, 2021, pp. 31-37

Influence of pulse-arc welding speed on structure and properties of joints of AMg5M aluminum alloy produced in different spatial positions of butts

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

The influence of welding speed (23, 40 and 57 m/h) under the conditions of the action of a consumable electrode on the nature of free penetration and crystallization of welds of AMg5M alloy in different spatial positions of butts was investigated. It was established that the optimal thermophysical conditions for the formation of a fine-grained structure of the joints occur when the welding speed is 40 m/h. At the same time, the strength of the welds increases by 10…15% without reducing the level of ductility. A distinctive feature in the structure of welds produced at different welding speeds is the size and shape of dendrites and phase inclusions in the intercrystalline space. 6 Ref., 5 Tabl., 1 Fig.
Keywords: aluminum alloy, pulse-arc welding using consumable electrode, welding speed, physical and mechanical properties of welded joints, structure, investigations

Received: 11.06.2021


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