Abstract
Comparisons of transmission electron micrographs of transverse sections of heavily drawn patented steel wire with existing metallographic and strength data were made with the aid of a computer. Both fragmentation of the cementite and the local deformation mode within the wire,i.e., plane strain elongation, an effect of the <110> wire texture of the ferrite, were taken into account in order to obtain a model for large-strain deformation of pearlitic or bainitic microstructures which is consistent with the observed microstructural changes and strain hardening rate. The functional dependence of this model on true strain and original substructural spacing is similar to the equation of Embury and Fisher for the strain hardening of drawn pearlite because their assumptions (no fragmentation of the cementite and homogeneous, axially symmetric elongation) produced offsetting errors. The present model allows for additional sensitivity of the strain hardening rate of drawn patented steel wire to metallurgical and processing variables over and above the simple dependence on original substructural scale predicted by the model of Embury and Fisher.
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Langford, G. A study of the deformation of patented steel wire. Metall Trans 1, 465–477 (1970). https://doi.org/10.1007/BF02811557
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DOI: https://doi.org/10.1007/BF02811557