Effect of surface-layer dissolution rate on softening of polycrystalline structural materials during plastic strain

Abstract

Method and Experimental Conditions. Tensile tests were carried out in an IMP-4Mmachine, equipped with a special arrangement for electrochemical removal of the testpiece surface layer (Fig. i). The rate of electrochemical dissolution of testpiece surface during straining was governed by the optimum gap between the electrode and the strained testpiece, and also by the change in current density and electrolyte composition.