THE EFFECT OF SURFACE-ACTIVE AGENTS ON THE MECHANICAL PROPERTIES OF METALS. PART I. THE EFFECT OF SURFACE-REMOVAL ON THE PLASTIC BEHAVIOR OF ALUMINUM SINGLE CRYSTALS.
Rept. for Jan 60-Jan 61
MARTIN CO BALTIMORE MD
Pagination or Media Count:
Aluminum single crystals were pulled in an electrolytic cell and the surface of the crystal was removed during the deformation. The extent of Stages I and II of the deformation process was increased and their slopes decreased as the rate of metal removed from the surface was increased. Increasing the strain rate caused a decrease in the extent of Stages I and II and increased the slopes. The experimental data indicate that the work-hardening coefficient of Stage I is determined primarily by the conditions which exist on the surface of the crystal. In Stages II and III, both surface effects and internal barriers are important. Author