Mechanism of formation of bimetal joints in friction welding

摘要

Peculiarities of contact interaction in friction welding of copper and steel 12Kh18N10T to aluminium AD1 have been studied. Principles of displacement of the friction surface with time and dependence of the displacement value upon the process parameters have been established. The effect of initial and final stages of the welding process on mass transfer in a joint, and kinetics of the early stages of formation of intermetallic interlayer in welding copper to aluminium have been investigated. The new method for friction welding with an adjustable deceleration of rotation has been developed.