Inhomogeneity of mechanical properties in stainless steel rods after drawing

The effect of 3D and 2D deformations on flattened wires

“…As it is seen the maximum and minimum effective strains are at the center and round edge of the cross-section of the flat rolled wire. Since the hardness of deformed metals is increased with increasing the effective strain, to verify the validity of effective strain in different regions of the cross-section of flat rolled wire qualitatively, the Vickers microhardness measurements were carried out on the cross-section (Sadok et al, 1994;Petruska and Janicek, 2003). For example in Fig.…”

On the strain inhomogeneity in drawn copper wires

“…Inhomogeneity in wire microstructure would affect some of the physical properties such as; electrical conductivity, magnetic moments and current density [7][8][9] as well as the formability and mechanical properties of the wire in next drawing passes [3,10]. The factors that affect strain distribution in wire cross-section are die-angle, friction, reduction of area, number of drawing passes and the wire metallurgical history.…”

A study on the computation of the redundant deformation factor in wire drawing of austenitic 304 stainless steel

“…The important parameters in the process are the reduction value and die angle which cause the non-uniform distribution of redundant strain in the cross section of the wire in addition to the homogeneous strain (Hosford and Caddell, 1993;Chin and Steif, 1995). This strain heterogeneity leads to the changes of the microstructure and properties in the cross section of the wire (Caddell and Atkins, 1969;Sadok et al, 1994). Usually, to consider the strain heterogeneity the redundant deformation factor, , is defined as follows (Aguilar et al, 2002):…”