Effects of forces on the welding tool during the dissimilar joining of aluminium and copper

In 1991, a game changing technique was introduced into the metal joining community. Patented in 1991 by The Welding Institute, the Friction Stir Welding (FSW) process has since transformed the way metal joining is being done. Since then, many industries have come to embrace the new joining technology due to its ease of operation and other numerous advantages it offers. Aside from the ease with which it is employed to join similar metals, FSW provides a way of joining dissimilar metals at the microstructural level without some of the problems that traditional metal joining technologies (especially fusion welding) encounter.