Berdnikova O. Peculiarities of mass transfer and phase formation within the zone of interaction of dissimilar metals in pressure welding under pulsed loading

The thesis work is dedicated to investigation of basic physical-chemical processes characteristic of pressure welding, such as micromechanisms of plastic deformation, peculiarities of mass transfer and character of phase formation within the zone of contact of dissimilar materials being welded under conditions of high welding deformation rates ( ? ~ 1•10Е2...1•10Е5 sЕ-1). Experimental results on formation of structure of the welds in dissimilar metals, differing in limited mutual solubility and having differing physical-mechanical properties under pressure welding conditions with with growth of the welding deformation rate, in particular structural changes within the zone of contact of dissimilar metalsin percussion welding, magnetic-pulse welding and explosion welding, are given. The effect of structural components of metal of the welding zone on strength and ductility properties was studied.