Nano Archive

High strength and high ductility in as-deposited nanocrystalline Ni

Dai, Pinqiang and Xu, Weichang and Tang, Dian (2010) High strength and high ductility in as-deposited nanocrystalline Ni. Journal of Physics: Conference Series, 240 (1). 012149.

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Official URL: http://stacks.iop.org/1742-6596/240/i=1/a=012149

Abstract

In the present study, an electrodeposited nanocrystalline (nc) Ni sample with high strength and superior ductility relative to many other electrodeposited nc-Ni was prepared. The superior ductility in the present nc-Ni sample free of defects was ascribed to mixed grains, the size of which spanned nano- and sub-micro scales at its as-deposited state with a grain size distribution ranged from 5 to 120nm. Obvious dislocation motion happening in coarse-grained polycrystalline was observed in large grains of nc-Ni matrix resulting in a remarkable enhanced ductility without a decrease in the strength. The present nc-Ni with an average grain size of 27.2nm prepared by direct current electrodeposition shows the average ultimate tensile strength of 1200MPa and the average elongation to failure of 10.4%.

Item Type:Article
ID Code:11223
Deposited By:Prof. Alexey Ivanov
Deposited On:01 Nov 2011 23:29
Last Modified:02 Nov 2011 00:47

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