Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/14125
Title: Superplastic deformation behaviour of electrodeposited nanocrystalline nickel
Authors: Chan, KC 
Wang, CL
Zhang, KF
Keywords: Fracture
Grain growth
Microstructure
Nanomaterials
Superplasticity
Issue Date: 2007
Publisher: Maney Publishing
Source: Materials science and technology, 2007, v. 23, no. 6, p. 677-682 How to cite?
Journal: Materials science and technology 
Abstract: In this paper, the superplasticity of an electrodeposited nanocrystalline nickel with a grain size of 65 nm was examined under different strain rates and temperatures. A maximum elongation of 550% was obtained at a relatively low temperature of 450°C and a strain rate of 1.67 × 10-3 s-1. The strain rate sensitivity index is found to be >0.5 demonstrating its good superplasticity. The fracture surfaces and the deformed microstructures reveal that significant grain growth occurs during deformation, and it is found that the addition of SiC particles can effectively improve the superplasticity of the material. Experimental results further illustrate that the deformed microstructure is dependent on the strain rate, and the surface morphology of the material is relating to its oxidation phenomenon during deformation.
URI: http://hdl.handle.net/10397/14125
ISSN: 0267-0836
EISSN: 1743-2847
DOI: 10.1179/174328407X168784
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