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This article reports the impact of nanovoids on macro-properties and its underlying physical mechanism in nanotwinned Cu films with nanovoids synthesized via magnetron sputtering. The results indicate the resistivity due to nanovoids is proportional to void porosity at 4K and the film hardness induced by nanovoids is proportional to void density in the slip plane while independent of void sizes. The...
Thermal annealing of a nanostructured Cu sample processed by means of dynamic plastic deformation (DPD) induces static recrystallization (SRX) accompanied by a drop in strength and enhanced ductility. An obvious increment in tensile uniform elongation appears when the volume fraction of SRX grains exceeds 80%. The strength–ductility combination of the annealed nanostructured samples is superior to...
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