High carbon steel wires, due to their high mechanical strength and high fatigue characteristics, have been widely used in industrial products such as bridge cables and steel cords for tires. To produce wires that match the requirements for those purposes, wire drawing process is used. However, after the processing, tensile strength of the wires increases, but ductility decreases due to the shear deformation near the wire surface.In this study, ductility improvement methods of high carbon steel wires are examined and as a solution a method of processing called "alternate wire drawing" is suggested. Following this, the usefulness of alternate wire drawing for increasing the ductility of the wires was determined.Firstly, the total equivalent strain and the change of the shape of elements for eachdrawn wire by FEM analysis before testing was examined. It was determined that in the case of alternate drawn wire the deformation of the elements was smaller also alternate wire drawing method is inhibiting the increase of total equivalent strain on wire surface. In case of tensile testing of drawn wire, the mechanical properties of each wire drawing method were examined and compared. By doing this test it was understood that in the case of alternate drawing there is a significant increase of elongation at fracture and drawing rate. Torsion test to confirm the ductility of conventional wire drawing and alternate wire drawing was also conducted. In case of conventional wire drawing method (Total reduction 91.7%) delamination appeared, however in alternate wire drawing method (Total reduction 91.7%) there was no delamination. In addition, in case of total reduction of 97.2%, alternate drawn wire increases 20% more its torsion characteristics, compared to conventional drawn wire. When examining the changes of the crystal grain of drawn wire by EBSD (Electron Back Scatter Diffraction Patterns), it wasconcluded out that grain size was compressed by conventional drawn wire due to share deformation and for alternate drawn wire it was confirmed that it was possible to inhibit the grain shrinking by 15% compared to the conventional drawing method.As a conclusion, by using alternate wire drawing method it is possible to improve the ductility of high carbon steel wires with the high tensile strength.
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