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Friction stir welding (FSW) process of copper alloys

M. Miličić ; Faculty of Technical Sciences, Novi Sad, Serbia
P. Gladović ; Faculty of Technical Sciences, Novi Sad, Serbia
R. Bojanić ; Faculty of Technical Sciences, Novi Sad, Serbia
T. Savković ; Faculty of Technical Sciences, Novi Sad, Serbia
N. Stojić ; Educons, Faculty of Environmental Protection, Sremska Kamenica, Serbia

Puni tekst: engleski pdf 527 Kb

str. 107-110

preuzimanja: 2.917



The present paper analyzes the structure of the weld joint of technically pure copper, which is realized using friction stir welding (FSW). The mechanism of thermo-mechanical processes of the FSW method has been identified and a correlation between the weld zone and its microstructure established. Parameters of the FSW welding technology influencing the zone of the seam material and the mechanical properties of the resulting joint were analyzed. The physical joining consists of intense mixing the base material along the joint line in the “doughy” phase. Substantial plastic deformations immediately beneath the frontal surface of tool provide fine-grained structure and a good quality joint. The optimum shape of the tool and the optimum welding regime (pressure force, rotation speed and the traverse speed of the tool) in the heat affected zone enable the achievement of the same mechanical properties as those of the basic material, which justifies its use in welding reliable structures.

Ključne riječi

friction stir welding; copper; microstructure; thermo mechanically process

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