Abstract
SAE 1065 steel wire ropes are prone to individual wire fracture due to the martensite structure with high carbon and high microhardness formed on the wire surface because of friction. A new low-carbon microalloyed steel wire composed of lath bainite with fine carbides dispersed in bainitic ferrite and lath martensite is developed in this paper. For the developed steel wire with a diameter of 1.0 mm, the tensile strength and low-cycle fatigue resistance are higher than those of commercial SAE 1065 wire. It is shown that the individual wire fracture caused by as-quenched martensite formation and severe plastic deformation can be avoided in the developed steel wire. Also, the design process and associated manufacturing process are discussed in detail.
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