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Strain rate sensitivity studies in an ultrafine-grained Al-30wt.%Zn alloy using micro- and nano-indentation

Chinh, N.Q., Csanádi, T., Györi, T., Valiev, R.Z., Straumal, B.B., Kawasaki, M. and Langdon, T.G. (2012) Strain rate sensitivity studies in an ultrafine-grained Al-30wt.%Zn alloy using micro- and nano-indentation Materials Science and Engineering: A, 543, pp. 117-120. (doi:10.1016/j.msea.2012.02.056).

Record type: Article


The characteristics of plastic deformation of an ultrafine-grained (UFG) Al–30 wt.% Zn alloy were investigated using depth-sensing micro- and nanoindentation. Emphasis was placed on the effects of grain boundaries and the unusually high strain rate sensitivity. It is shown that there is a close relationship between enhanced strain rate sensitivity and ductility in this UFG material and this is associated with grain boundary sliding and enhanced diffusion along the Al/Al grain boundaries which appear to be wetted by Zn-rich layers.

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Published date: 1 May 2012
Keywords: ultrafine-grained materials, grain boundary sliding, wetted boundaries, strain rate sensitivity, micro and nanoindentation
Organisations: Engineering Mats & Surface Engineerg Gp


Local EPrints ID: 340527
ISSN: 0921-5093
PURE UUID: f33fb384-0d22-4be8-a0b7-5c34fa91d95f
ORCID for T.G. Langdon: ORCID iD

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Date deposited: 25 Jun 2012 10:59
Last modified: 18 Jul 2017 05:43

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Author: N.Q. Chinh
Author: T. Csanádi
Author: T. Györi
Author: R.Z. Valiev
Author: B.B. Straumal
Author: M. Kawasaki
Author: T.G. Langdon ORCID iD

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