Equal Channel Extrusion Heterogeneities in Recrystallized Copper

Equal Channel Extrusion Heterogeneities in Recrystallized Copper

Various processing routes have been studied to develop the most efficient route toward microstructure refinement and texture homogenization. Most studies have focused on the central shear zone in round or square cross-section rods. However, the utility or application of these materials is subject to...

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Veröffentlicht in:Materials science forum 2005-01, Vol.495-497, p.857-864
Hauptverfasser: Necker, C.T., Alexander, D.J., Beyerlein, Irene J.
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description Various processing routes have been studied to develop the most efficient route toward microstructure refinement and texture homogenization. Most studies have focused on the central shear zone in round or square cross-section rods. However, the utility or application of these materials is subject to conditions across the entire rod. This study begins to investigate the development of recrystallization textures and microstructures across copper ECAE processed via route Bc through 16 passes. Although the recrystallized condition appears to be reasonably homogeneous after 4 or 8 passes, additional passes lead to stronger, heterogeneous recrystallization textures and coarsened microstructures.
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