Mechanical and microstructural properties of EN AW-6060 aluminum alloy joints produced by friction stir welding

Abstract

Abstract. In the study, the mechanical and microstructural properties of friction stir welded EN AW-6060 Aluminum Alloy plates were investigated. The friction stir welding (FSW) was conducted at tool rotational speeds of 900, 1250, and 1500 rpm and at welding speeds of 100, 150 and 180 mm/min. The effect of the tool rotational and welding speeds such properties was studied. The mechanical properties of the joints were evaluated by means of micro-hardness (HV) and tensile tests at room temperature. The tensile properties of the friction stir welded tensile specimens depend significantly on both the tool rotational and welding speeds. The microstructural evolution of the weld zone was analysed by optical observations of the weld zones.

Bulletin of the Polish Academy of Sciences: Technical Sciences

“…The design of cylindrical pin is taken from Ref. [30], and design of conical pin is developed for this topic. The conical pin has 5 threaded and cylindrical pin has 6 threaded.…”

Fatigue fracture cross-sections after cyclic tests with a combination of cyclic bending and torsion of samples made of aluminum alloy 6060

“…The surface of the fractures looks completely different for the combination of bending and torsion (both for the combination of bending and torsion τa=0.5σa and τa=σa) of the alloy subjected to T6 treatment method (Figs. [24][25][26][27]. Here, in principle, it is possible to distinguish a characteristic structure of the fractures in the same way as for bending samples (both after T6 and T64 treatment).…”

“…This effect can be obtained by using lightweight materials or their appropriate shape. It is also further processing [19-20, 32, 38], strength, stiffness and elasticity [8,21,32], corrosion resistance [34], type of decorative coating or weldability [26].…”

“…In the work [26], samples made of 6060 aluminum alloy friction stir welded were tested. Both mechanical and microstructural properties were tested.…”

Bulletin of the Polish Academy of Sciences: Technical Sciences

“…Hence, the advanced joining technique of friction stir welding (FSW) is highly preferable in achieving better mechanical properties with defect-free welding [4,5]. Various studies have been conducted to investigate the importance of materials, welding parameters and tool design [6][7][8][9][10][11][12][13]. The significance of friction pressure on the microstructure has also been investigated [14].…”