Journal
APPLIED PHYSICS LETTERS
Volume 102, Issue 24, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4811743
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- Deutsche Forschungsgemeinschaft (Forschergruppe 714 Plasticity in Nanomaterials)
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Deformation mechanisms of nanocrystalline Au and AuCu thin films on compliant substrates were investigated by synchrotron-based in situ tensile testing and Automated Crystal Orientation Mapping using transmission electron microscopy. The results demonstrate that intragranular dislocation plasticity, inferred from evolution of deformation texture, is responsible for the formation of periodic and ordered shear bands in AuCu films. In contrast, pure Au films deform homogeneously without shear band formation and without evolution of deformation texture. Cu solutes are deemed to pin grain boundaries thereby enforce dislocation glide, while in pure Au, plasticity is carried by grain boundary shear and grain boundary migration. (C) 2013 AIP Publishing LLC.
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