Textural and Microstructural Inhomogeneities in Drawn and Annealed OFHC Copper Wire

Daudi R. Waryoba; Peter N. Kalu

doi:10.4028/www.scientific.net/MSF.495-497.895

Paper Titles

Variance of the Grain Boundary Character Distribution
p.871

Deformation and Recrystallization Texture of Heavily Drawn OFHC Copper
p.877

The Role of Microstructural Aspects on the Performance of Coarse-Grained Superplastic Al Alloys
p.883

Effect of Thermomechanical Treatment on the Texture Evolution and Superplasticity of a Zn-0.3wt.% Al Alloy
p.889

Textural and Microstructural Inhomogeneities in Drawn and Annealed OFHC Copper Wire
p.895

Microtexture Analysis of Friction Stir Welded Al 6061-T651 Plates
p.901

High Tensile Strength of Drawn Gold
p.907

On Crystallographic Texture of As-Drawn Doped-W Wires
p.913

Neutron Diffraction Measurements of Deformation and Recrystallization Textures in Cold Wire-Drawn Copper
p.919

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Textural and Microstructural Inhomogeneities in Drawn and Annealed OFHC Copper Wire

Abstract:

This work presents the results of a study on textural and microstructural inhomogeneities that develop during annealing of heavily drawn Oxygen free high conducting (OFHC) copper wire. The wire was drawn at room temperature to a true strain of 2.31 and isothermally annealed at 750°C for annealing times ranging from 10s to 1hr. The inhomogeneity of microstructure across the wire was clearly visible as three distinct concentric regions, which were classified as: the inner core, the mid section, and the outer surface. Two texture transitions were observed. At shorter annealing time, recrystallization which originated from the mid section, resulted into a strong<100>+weak<111> duplex fiber texture. However, prolonged annealing gave rise to abnormal grain-growth that proceed from the mid section to the outer surfaces with a dominant <111> fiber component at the mid and inner region, and mixed components of <111>, <100>, and <112> at the outer surfaces.