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
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%.
|Deposited By:||Prof. Alexey Ivanov|
|Deposited On:||01 Nov 2011 23:29|
|Last Modified:||02 Nov 2011 00:47|
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