Effect of Initial Residual Stress on Stress Relaxation in Cold-Drawn Steel Rods
This work shows the effect of the initial residual stress state on the stress relaxation behavior of cold-drawn steel rods. The evolution of residual strains at several locations along the rod diameter was measured in-situ by neutron diffraction during a stress relaxation experiment. It was found that if residual stresses are significant, stress relaxation is not homogeneous in the cross-section of the rods. This also explains the higher stress losses found in the rods with high residual stresses.
Y. Akiniwa, K. Akita and H. Suzuki
J. Ruiz-Hervias et al., "Effect of Initial Residual Stress on Stress Relaxation in Cold-Drawn Steel Rods", Materials Science Forum, Vol. 652, pp. 227-232, 2010