“…Friction Stir Processing (FSP) is an advanced process for altering the microstructure of a processed alloy [1], which leads to the structure rearrangement and grain size alteration, which has already been developed through the use of the Friction Stir Welding (FSW) technique, that was introduced by TWI Ltd in the United Kingdom in 1991. Material flow affecting parameters such as material positioning, process parameters, tool design, and process improvements are essential for the overall performance of friction-based manufacturing processes like friction stir welding, friction stir lap welding and friction stir spot welding [2,3,4,5,6,7,8,9,10,11,12].…”