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, 117-120. (http://dx.doi.org/10.1016/j.msea.2012.02.056).
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Description/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.
| Item Type: | Article |
|---|---|
| ISSNs: | 0921-5093 (print) |
| Keywords: | ultrafine-grained materials, grain boundary sliding, wetted boundaries, strain rate sensitivity, micro and nanoindentation |
| Subjects: | T Technology > TP Chemical technology T Technology > TS Manufactures |
| Divisions: | Faculty of Engineering and the Environment > Engineering Sciences > Engineering Materials Surface Engineering |
| Item ID: | 340527 |
| Date Deposited: | 25 Jun 2012 10:59 |
| Last Modified: | 25 Jun 2012 10:59 |
| Contributors: | Chinh, N.Q. (Author) Csanádi, T. (Author) Györi, T. (Author) Valiev, R.Z. (Author) Straumal, B.B. (Author) Kawasaki, M. (Author) Langdon, T.G. (Author) |
| Date: | 1 May 2012 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/340527 |
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