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Unexpected brass-type texture in rolling of ultrafine-grained copper

Abstract : Performing large-strain rolling of initially ultrafine-grained copper obtained by eight passes in equal-channel angular pressing, a brass-type - rather than a copper-type - texture was achieved. Clearly, the deformation mechanism is different in ultrafine-grained materials for subsequent rolling. Using the viscoplastic self-consistent polycrystal model, we find that the deformation mechanism is associated with the activation of partial \1 1 1\ < 1 1 -2 > slip and with a reduced quantity of geometrically necessary dislocations that lead to near Taylor polycrystal deformation conditions in ultrafine-grained copper.
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Submitted on : Tuesday, April 25, 2017 - 2:28:46 PM
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C. F. Gu, Laszlo S. Toth, Yu Dong Zhang, M. Hoffman. Unexpected brass-type texture in rolling of ultrafine-grained copper. Scripta Materialia, 2014, 92, pp.51-54. ⟨10.1016/j.scriptamat.2014.08.012⟩. ⟨hal-01513739⟩



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