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Microstructure and Properties of Pearlitic Steel during Cold Wire Drawing: A Residual Stress Perspective*

Abstract The residual stress evolution during cold drawing of pearlitic steel wire was followed over a broad strain range by diffraction techniques. The present work discusses possible links between microstructural changes induced by severe deformation and their “footprints” left in the residual stresses on different – macro, micro and nano – scale levels. Energy dispersive synchrotron diffraction revealed a significant divergence in the grain microstress evolution among differently oriented ferrite grains in the high deformation regime beyond an accumulated true strain of about ∊t ≥ 2.3. A possible physical reason for the observed divergence is discussed in terms of a distinct microstructure development in this stage of the cold wire drawing.