Properties of joints of aluminum alloys sheets obtained by friction stir welding
The structure and properties of butt joints of the aluminum alloy of 1565chM with the alloys АМg5, АМg6, AV (6061) and 7021 obtained by friction stir welding are studied. The level of the mechanical properties of such joints and their destruction zone in the dependence on the combination of the combinable alloys are determined. It is established that the investigated alloys have good weldability in the conditions of friction stir welding. The strength and plastic properties of the joints of all combinations of the investigated alloys obtained by friction stir welding exceeded the analogous indices of the welded joints obtained by automatic argon-arc welding by the nonfusible electrode.