Texture and Microstructure Evolution during Cold Rolling of Cu-Fe Laminates Prepared by Accumulative Roll Bonding

Satyam Suwas; K.S. Suresh; A.D. Rollett

doi:10.4028/www.scientific.net/MSF.715-716.170

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The Effect of Cold Rolling Reduction on Shear Band and Texture Formation in Fe-3%Si Alloy
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An Investigation of the Dynamic Recrystallisation Behaviour of Magnesium AZ31 Alloy at 450°C Using Plane Strain Compression Testing as a Tool
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Texture and Microstructure Evolution during Cold Rolling of Cu-Fe Laminates Prepared by Accumulative Roll Bonding
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Evolution of Textures and Microstructures in Low-Reduction Rolled and Annealed Low-Carbon Steels
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HomeMaterials Science ForumMaterials Science Forum Vols. 715-716Texture and Microstructure Evolution during Cold...

Texture and Microstructure Evolution during Cold Rolling of Cu-Fe Laminates Prepared by Accumulative Roll Bonding

Abstract:

Multi-layered materials have been made from Cu-Fe with approximately equal volume fractions using the Accumulated Roll Bonding (ARB) technique with less than 1 μm thickness of the individual layers. The so-obtained multi-layers have been subjected to deformation by cold rolling to 25, 50, 75, 87 and 93% reduction in thickness. A detailed characterization has been carried out using X-ray diffraction (line profile analysis and texture measurement) and electron (scanning and transmission) microscopy. It has been found that Fe layers are disintegrated whereas Cu retains its continuity within a layer. Microstructural Characterization from X-Ray Line profile Analysis (XRDLPA) through Variance Method reveals that large amount of strain is initially carried by Cu layers during deformation. In the Cu-Fe layer, the texture is comparatively weaker in Cu layer and strong in Fe layers. Brass Component increases up to 75% reduction and then decreases, while the ratio of Cu/S and Bs/S remains almost constant through out the deformation. After 50% reduction, dynamic recovery is predominant as indicated by the increase in the amount of low angle grain boundaries and decrease in dislocation density. The presence of R component indicates continuous dynamic recovery and recrystallization (CDRR) at the advanced stage of deformation.