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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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.
|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
|Date Deposited:||25 Jun 2012 10:59|
|Last Modified:||25 Jun 2012 10:59|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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