The study into the effects of welded parameters on jointure in the process of AA 2024 aluminum alloys friction stir welding

In this study, the microstructure of aluminium sheets with different parameter which were joined through stir friction welding were examined. The way of stir friction welding, started to use in 1990?s, is a solid phase way and is continiously developing with technology. Especially today, because of its superiorities with many sides, stir friction welding is used for aluminium and its alloys? welding. During welding, rotatinal speed of welding stir tool, the shoulder width of welding stir tool and welding speed were chosen asvariable parameters. While rotational speed of welding stir tool was constant, welding speed was chosen in a different speed and while welding speed was constant, the rotational speed of welding stir tool was chosen in different speed. These were repeated for all three shoulder widths.Through metallographic and mechanic tests on welding, the influences of different speed of welding and rotational welding speed on metallurgy and mechanic properties of junction section were examined.Key words:Friction stir welding, mechanic properties , friction stir welding of aluminium alloys.