The effect of cyclic bending on the mechanical properties and dislocation structures of drawn steel bars

Axisymmetric bar drawing increases the strength and decreases the ductility of metals. The recovery of these final mechanical properties often employs costly annealing processes. This paper discusses the possibility of controlling the mechanical properties of AISI 1010 steel bars through cyclic bending after one or two drawing passes and between these two successive passes. It is shown that cyclic bending softens the drawn material and increases its uniform elongation. The attending dislocation structures are presented and related to the associated mechanical properties. It is considered that cyclic bending is of interest in the industrial control of the final mechanical properties of drawn AISI 1010 steel bars.