Czasopismo | RUDY I METALE NIEŻELAZNE | Rocznik 2018 - zeszyt 4

WPŁYW WYBRANYCH PARAMETRÓW PROCESU ZGRZEWANIA TARCIOWEGO Z MIESZANIEM NA JAKOŚĆ ZŁĄCZY ALUMINIOWYCH

INFLUENCE OF FRICTION STIR WELDING PARAMETERS ON ALUMINUM JOINT QUALITY

10.15199/67.2018.4.1

nr katalogowy: 113472
10.15199/67.2018.4.1

Streszczenie

Zgrzewanie tarciowe z mieszaniem (ang. friction stir welding) jest opatentowaną w latach 90. XX w. metodą łączenia blach, która umożliwia zgrzewanie elementów o różnych właściwościach i grubościach. Proces zgrzewania tarciowego z mieszaniem może być stosowany do zgrzewania materiałów, których łączenie klasycznymi metodami spawalniczymi jest trudne lub niemożliwe. Z powodzeniem zgrzewane są trudnospawalne lotnicze stopy aluminium z serii 2xxx i 7xxx. Przedmiotem analiz w niniejszym artykule jest określenie wpływu parametrów procesu liniowego zgrzewania z mieszeniem na jakość złączy wykonanych z blach aluminiowych. Badaniami objęto blachy z aluminium 7075 T6. Łączono blachy o grubościach 1,6 i 0,8 mm. Analizowano wpływ prędkości obrotowej, prędkości liniowej oraz sposobu mocowania próbek podczas statycznej próby rozciągania na nośność złączy. Przedstawiono makrostrukturę złączy, omówiono rodzaje wad i ich wpływ na nośność złączy.

Abstract

Friction Stir Welding (FSW) is a process invented in the 1990s that enables welding of the materials with different properties and thicknesses. Friction stir welding can be used for the materials that are poorly weldable or non-weldable by conventional fusion welding methods. Poorly weldable aluminum alloys of 2xxx and 7xxx series are easily joined by FSW technology. Determination of the influence of the FSW parameters on the quality of aluminum joints is the object of the work. The study includes 7075 T6 aluminum sheets. The sheets with thickness of 1.6 and 0.8 mm were joined. The influence of rotational speed, linear velocity and loading type during tensile tests on joint load capacity was analyzed. The macrostructure of the joints was presented. The typical defects and their impact on joint load capacity was described.

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Keywords

Bibliografia

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