YüZEY POTANS？YEL？N？N DüZENS？Z PLAST？K DEFORMASYON ？LE KORELASYONU

Surface potential of aluminum alloy AA 3204 undergoing an irregular (serrated) plastic flow was monitored in 0.1 M NaCl solution under various strain rates from 1.0x10-4/s to 2.0x10-5/s at RT (20 oC). Large potential bursts at the stress drop periods of the irregular flow were revealed. Number and frequency of the stress drops along the plastic region matched with that of the bursts precisely, and average burst magnitude was found to be related with that of the stress drops. The observations affirmed an in-situ utility of the electrochemical method for monitoring deformation and damage evolution in aqueous environments for materials susceptible to irregular flo