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Fakulteta za strojništvo, Ljubljana (FSLJ)
  • Anomalous hardening of low carbon non alloyed steel wire during cold drawing
    Ule, Boris ; Kuzman, Karl, 1941- ; Grešovnik, Ferdo
    Monotonic deformation, though heterogeneous as in die-drawing, results in an increase in the flow stress and tensile strength of cold-drawn steel wires. The flow stress of cold-drawn low-carbon non ... alloyed steel wires can be predicted with sufficient accuracy from stress-strain data determined by a simple tension test of as-hot-rolled wire. However, in the flow stress of cold-drawn wire may only considerably exceed the values expected from a tensile test of as-hot-rolled wire at a relatively high degree of cold-drawing reduction (▫$\epsilon$▫ > 0.5). It was established that this additional strain hardening effect was rooted in the development of the deformation texture characterized by an increased frequency of (200) and (211) planes of ferrite and by a decreased frequency of (110) planes of ferrite with regard to the isotropic specimen. It was also concluded that the texture over the wire cross section is of a heterogeneous type owing to the different deformation paths of the various parts of the wire in the drawing die. The results of the investigations were successfully used for the process planning and prediction of the strength properties of cold forged bolts from soft steel wires.
    Vir: Wire. - ISSN 0043-5996 (Let. 44, št. 1, february 1994, str. 63-68)
    Vrsta gradiva - članek, sestavni del
    Leto - 1994
    Jezik - angleški
    COBISS.SI-ID - 21930

vir: Wire. - ISSN 0043-5996 (Let. 44, št. 1, february 1994, str. 63-68)

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