Kinetics of setting between dissimilar crystalline materials under thermo deformation effect

It has been established that the kinetic curves of adhesion (strength increase) are sigma type with displacement period second stage relative to first one. The this is determined by starting a marked metal flow over micro-protrusion contact sections and its passing on baton into harder material under kind stresses. Activation surface (corundum) occurs due handover deformation layer plastically deformed micro-protrusions (grains) effect micro-stresses which were much higher minimum yield strength material, thereby causing plastic latter.