Effect of Initial Residual Stress on Stress Relaxation in Cold-Drawn Steel Rods

Abstract:

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.

• Periodical: Materials Science Forum (Volume 652)
• Pages: 227-232
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.652.227
• Online since: May 2010
• Authors: Jesus Ruiz-Hervias, Jose M. Atienza, Javier R. Santisteban, Manuel Elices Calafat
• Keywords: Cold-Drawn Wire, Neutron Diffraction, Residual Stress, Stress Relaxation

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DOI: 10.1007/bf03027564