Long-term corrosion test, constant tensile test and corrosion fatigue test of steel wire were carried outin this paper. According to the results of parameters of electrochemical corrosion, equivalent stressdistribution of pit bottom, and morphology of steel wire surface and fracture, the coupled action ofstress and corrosion on the failure of mine steel wire was discussed. It was found that the corrosioncurrent density of steel wire in the initial phase of corrosion fatigue test was about 20 times higher thanthat in long-term corrosion test, and the radio increased for the effect of the cyclic load during the test,which also showed that the corrosion rate of steel wire would be greatly increased by the load. Inaddition, the equivalent stress distribution of pit bottom was related to the load and corrosion degree,and equivalent stress value appears to be associated with this effect which marginally increases withincreasing corrosion degree of steel wire under the same load. The corrosion of surface wasstrengthened with the increase of load, and cyclic stress may result in crack formation. Meanwhile, thebrittleness of steel wire increased under the interaction of load and corrosion. Obvious plasticdeformation was not observed in corrosion fatigue test, but brittle completely.
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