Methods for producing permanent joints of aluminum and titanium alloys

Abstract

Theresultsof the analysis of theoretical and experimental studies of methods for producing permanent joints of dissimilar metals and alloys are presented, as well as the advantages, implementation problems and prospects of using friction stir welding to join titanium and aluminum alloys. It is noted that most studies focus on friction stir welding of light metals such as aluminum, copper, magnesium and their alloys. Despite the great scientific and practical interest, the friction stir welding processes of alloys and metal-matrix composite materials based on aluminum and titanium have been studied less thoroughly and require additional attention.Giventhevarietyandcomplexityof friction stir welding, the lack of a correct assessment of the reactivity, properties and design features of aluminum and titanium alloys can lead to a number of problems associated with a change in the structure of materials and defects in the welding zone, which is accompanied by the inevitable deterioration of the mechanical characteristics of the finished joints.