Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31165
Title: Low temperature and high strain rate superplasticity of Ni-1 mass% SiC nanocomposite
Authors: Chan, KC 
Wang, CL
Zhang, KF
Keywords: Superplasticity
Ni-SiC nanocomposite
Low temperature
High strain rate
Fracture
Electrodeposition
Issue Date: 2004
Publisher: Japan Institute of Metals
Source: Materials transactions, 2004, v. 45, no. 8, p. 2558-2563 How to cite?
Journal: Materials transactions 
Abstract: The superplastic deformation behaviour of a Ni-1 mass%SiC nanocomposite produced by pulse electrodeposition was investigated at temperatures of 410degreesC and 450degreesC and strain rates ranging from 8.3 x 10(-4) to 5.0 x 10(-2) s(-1). A maximum elongation of 836% was obtained at 450degreesC and a strain rate of 1.67 x 10(-2) s(-1), which is the first observed result of the high strain rate and low temperature superplasticity for Ni-SiC nanocomposites. Scanning electron microscopy and transmission electron microscopy were employed to examine the microstructure of the as deposited and deformed samples. The superplastic behaviour of the Ni-1%SiC nanocomposite was analysed through observations of its fracture surfaces and microstructures. The results showed that SiC nanoparticles play an important role in the stability ofthe microstructure ofthe Ni-SiC nanocomposite. A low volume fraction of cavity is necessary for a large elongation. The mechanisms of high strain rate and low temperature superplasticity of the composite are discussed in the paper.
Description: 8th International Conference on Superplasticity in Advanced Materials, Oxford, England, 28-30 March 2003
URI: http://hdl.handle.net/10397/31165
ISSN: 1345-9678
EISSN: 1347-5320
DOI: 10.2320/matertrans.45.2558
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