Abstract
AbstractThe current study investigates the comparison of joint configuration between square butt welding and scarf welding of aluminum 6061 and their effect on mechanical properties. Two aluminum plates with a different thickness of 2.0 mm on the advancing side and 1.5 mm on the retreating side were welded together using the Friction Stir Welding (FSW) method with the identical parameters of welding speed, spindle rotation, tool tilt angle, and tool profile. All four comparisons are conducted using the fix parameter for different rolling angles, which are 0°/0°, 90°/90°, 0°/90° and 90°/0°. Based on tensile test results, it is found that the ultimate tensile strength (UTS) for the scarf joint is higher than square butt joint configuration by 2–5%. On the microhardness, it was observed that the scarf joint had a higher Vickers hardness value than the square butt joint configuration, which was identified in the stir zone. Based on the comparison results, it was discovered that the scarf joint configuration is stronger and may facilitate advancements in the automotive industry, particularly in terms of crashworthiness.KeywordsFriction Stir WeldingScarf jointSquare butt joint
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