The Corrosion Fatigue Strength of High Strength Steel Wire

Abstract

The corrosion fatigue strength of wires of 0.75% C-steel is presented, relating to the residual stresses. Steel wires as drawn which have high tensile residual stress, wires annealed at 250°C after cold drawing to decrease the residual stress, wires annealed at 630°C after drawing to vanish the residual stress, and wires surface rolled after annealed at 630°C which have high compressive residual stress were tested under rotating bending in stream of city water. The corrosion fatigue strength is lowered by tensile residual stresses and is improved considerably by compressive residual stress. The influence of residual stress on fatigue strength is more remarkable under corrosive circumferences than in air. The corrosion fatigue tests of wire strands are also made.