The objective of this research was to measure the material properties as well as the forces to orthodox friction stir welding (FSW) performed in air of AA6061. These results were compared by using ultimate tensile strength (UTS) and weld root properties such as joint line residue length at the crossing point between the welded aluminum alloy which allows crack initiation. Metallurgic cross sections of the AA6061 welds were prepared and the weld nugget hardness between the welding parameters was compared as well. Experiments such as this one and others enumerating the forces and process parameters must be achieved. A steady state model of temperature distribution has been put forward and is shown to precisely forecast trends in heat input using heat generation equations from [1,2]. Temperature distribution was measured and correlated to data by use of Micron Thermal Imaging camera.
