Precession electron diffraction (PED) is used to acquire orientation information in Cu-Nb nanolamellar composites fabricated by accumulative roll bonding (ARB). The resulting maps quantify the grain size, shape, orientation distributions and interface planes in the vicinity of nanometer-thick deformation twins. The PED-based texture results compare favorably with bulk textures provided by neutron diffraction measurements, indicating uniformity in the ARB Cu-Nb texture. Additionally, {112}(Cu)parallel to{112}(Nb) interfaces are present, suggesting that ARB techniques can lead to stable interfaces with a special crystallography. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.