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

Strain rate sensitivity studies in an ultrafine-grained Al-30wt.%Zn alloy using micro- and nano-indentation
Strain rate sensitivity studies in an ultrafine-grained Al-30wt.%Zn alloy using micro- and nano-indentation
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.
ultrafine-grained materials, grain boundary sliding, wetted boundaries, strain rate sensitivity, micro and nanoindentation
0921-5093
117-120
Chinh, N.Q.
75241499-642b-477a-b457-cd08bcab4b9d
Csanádi, T.
e5dc4185-eb9b-443f-876e-66d8f8d16fdc
Györi, T.
79affc04-ccab-47f0-8071-1540d1af2062
Valiev, R.Z.
f32c36f3-ce3a-4531-b8ef-0b18ad6626da
Straumal, B.B.
5f9aeab2-5887-4bfb-8bf2-e953cb177993
Kawasaki, M.
d0ce18b9-8403-4db2-9cb2-3a6165f288a6
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Chinh, N.Q.
75241499-642b-477a-b457-cd08bcab4b9d
Csanádi, T.
e5dc4185-eb9b-443f-876e-66d8f8d16fdc
Györi, T.
79affc04-ccab-47f0-8071-1540d1af2062
Valiev, R.Z.
f32c36f3-ce3a-4531-b8ef-0b18ad6626da
Straumal, B.B.
5f9aeab2-5887-4bfb-8bf2-e953cb177993
Kawasaki, M.
d0ce18b9-8403-4db2-9cb2-3a6165f288a6
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

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, 117-120. (doi:10.1016/j.msea.2012.02.056).

Record type: Article

Abstract

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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More information

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

Identifiers

Local EPrints ID: 340527
URI: https://eprints.soton.ac.uk/id/eprint/340527
ISSN: 0921-5093
PURE UUID: f33fb384-0d22-4be8-a0b7-5c34fa91d95f
ORCID for T.G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 25 Jun 2012 10:59
Last modified: 06 Jun 2018 12:48

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