| Summary: | Aluminum 6061 plate was joined by Friction Stir Welding (FSW) with new purpose of friction stir welding corner was designed to increase the strength of the joint. The corner-joint micro structure distribution depends on welding tool rotation (rpm) and travel speed (mm/min) analyzed and with two position welded observed. The welding parameters were observed, i.e., tensile strength, microstructure, heat input and micro hardness. The microstructure results are homogen and plastic homogen. The new surface joining gave higher tensile (σ) than that in the previously published papers. The benefit of the new surface preparation is the Highest Force (F) = σΧA. The tensile stress average is 206.75 MPa on the welding Position 1 and 221.4 MPa: on the welding Position 2. It was more than 160 MPa in all Aluminum alloy caused by homogeneity of microstructure, microhardness, small kissing and large plastic area
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