Fig. 8From: Annihilation and sources in continuum dislocation dynamicsFirst 3 stages of work hardening in cooper rolling. Experimental measures marked by [×] obtained from Göttler (1973). Top-left: resolved shear stress(RSS) against plastic slip. Top-right: hardening-rate vs RSS; Hardening rate of experimental measures are obtained by fitting a 6th-order polynomial to stress-strain curve. Bottom-left: log-log plot of dislocation density vs RSS; This plot shows that dislocation density eventually saturates as the RSS can not increase any more. Bottom-right: Dislocation-entanglement (Φ=q/ρ1.5) vs plastic slipBack to article page