Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/12589
Title: Enhanced low-temperature superplasticity of Ni-Co alloy by addition of nano-Si3Ni4 particles
Authors: Wang, CL
Chan, KC 
Keywords: Electrodeposition
Nanocomposite
Ni-Co alloy
Superplasticity
Issue Date: 2008
Publisher: Elsevier
Source: Materials science and engineering. A, Structural materials : properties, microstructure and processing, 2008, v. 491, no. 1-2, p. 266-269 How to cite?
Journal: Materials science and engineering. A, Structural materials : properties, microstructure and processing 
Abstract: In this paper, the low-temperature superplasticity of the electrodeposited Si3N4/Ni-Co nanocomposite was investigated for the first time at temperatures ranging from 673 to 823 K and at constant strain rates from 1 × 10-3 to 1 × 10-2 s-1. A maximum elongation of 692% was obtained at a temperature of 723 K and a strain rate of 5 × 10-3 s-1. High-strain rate superplasticity with an elongation of 371% was realized at a temperature of 723 K. It was found that the Si3N4 nanoparticles play an important role in the stability of the microstructure of the Si3N4/Ni-Co nanocomposite. The relatively large superplasticity of the nanocomposite compared to the Ni-Co alloy is discussed. Deformed microstructure, fracture and surface morphology are examined and the deformation mechanism of the composite is discussed.
URI: http://hdl.handle.net/10397/12589
ISSN: 0921-5093
EISSN: 1873-4936
DOI: 10.1016/j.msea.2008.02.033
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