Experimental Investigation of Friction Stir Welding on Al 2024-T3 and Al 7075-T6 Alloy

Abstract

Aluminum alloys are becoming increasingly popular due to their potential to offer superior durability while being lower in weight. Most industrial sectors, including transportation, aviation, marine, automotive, and others, have a strong interest in light-weight components, particularly in the transportation industry. Traditional joining techniques have a negative impact on the joining of these lightweight industrial materials, necessitating the development of new environmentally friendly joining methods. The lap joint of Al 2024-T3 and Al 7075-T6 alloys is done utilizing friction stir welding (FSW) with tool rotational speed (TRS) and tool travel speed (TTS) as process parameters. In addition, a tensile and microhardness test was performed to determine the mechanical characteristics of the weld joints. For FSW joints, the hardness of the stir zone at the weld center at 1000 RPM and 40 mm/min is 151.86 Hv. Carbon inclusion in the stir zone is demonstrated by EDS investigation of tool material dispersion in the weld region.