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Cold-drawn prestressing steel wires exhibit strength anisotropy in the form of fracture path deflection towards a direction approaching the wire axis, or cold drawing line, as a consequence of the pearlitic microstructure orientation induced by the manufacturing procedure. Such a crack path deflection is initiated at certain nuclei (fracture origins) at which axial cracking appears in the cold drawing...
The residual stress state generated by cold-drawing in a ferritic steel rod has been determined. Stress profiles in the three principal directions were measured by neutron and X-ray diffraction and calculated by 3D finite element simulation. The agreement between the simulations and the experimental data is excellent.
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