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- W4241569209 abstract "Nanocrystalline (nc) metals possess extremely high strength, while their capability to deform plastically has been debated for decades. Low ductility has hitherto been considered an intrinsic behavior for most nc metals, due to the lack of five independent slip systems actively operating during deformation in each nanograin. Here we report in situ high resolution transmission electron microscopic (HRTEM) observations of deformation process of nc gold under compression, showing the excellent ductility of individual and aggregate nanograins. Compression causes permanent change in the profile of individual nanograins, which is mediated by dislocation slip and grain rotation. The high rate of grain boundary sliding and large extent of widely exited grain rotation may meet the boundary compatibility requirements during plastic deformation. The in situ HRTEM observations suggest that nc gold is not intrinsically brittle under compressive loading." @default.
- W4241569209 created "2022-05-12" @default.
- W4241569209 date "2014-09-12" @default.
- W4241569209 modified "2023-10-16" @default.
- W4241569209 title "10.1063/1.4895550.1" @default.
- W4241569209 doi "https://doi.org/10.1063/1.4895550.1" @default.
- W4241569209 hasPublicationYear "2014" @default.
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