The effect of grain boundary sliding and strain rate sensitivity on the ductility of ultrafine-grained materials


Chinh, N Q, Langdon, T.G., Csanádi, T., Gubicza, J., Valiev, R.Z. and . Straumal, B.B., (2010) The effect of grain boundary sliding and strain rate sensitivity on the ductility of ultrafine-grained materials Wang, Jing Tao, Figueiredo, Roberto B. and Langdon, Terence G. (eds.) In Nanomaterials by Severe Plastic Deformation: NanoSPD5. vol. 667-669, Trans Tech., pp. 677-682. (doi:10.4028/www.scientific.net/MSF.667-669.677).

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Description/Abstract

Most ultrafine-grained (UFG) materials produced by severe plastic deformation (SPD) exibit only limited ductility which is correlated with the low strain rate sensitivity (SRS) of these materials. Recently, it was demonstrated that SPD is capable of increasing the room temperature ductility of aluminum-based alloys attaining elongations up to 150%, together with relatively high strain rate sensitivity. In the present work, additional results and discussions are presented on the effect of grain boundary sliding (GBS) and SRS on the ductility of some UFG metals and alloys. The characteristics of constitutive equations describing the steady-state deformation process are quantitatively analyzed for a better understanding of the effects of grain boundaries and strain rate sensitivity

Item Type: Conference or Workshop Item (Paper)
Digital Object Identifier (DOI): doi:10.4028/www.scientific.net/MSF.667-669.677
ISBNs: 9783037850077 (print)
Venue - Dates: 5th International Conference on Nanomaterials by Severe Plastic Deformation, 2011-03-21 - 2011-03-25
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Organisations: Bioengineering Group
ePrint ID: 300784
Date :
Date Event
December 2010Published
Date Deposited: 29 Feb 2012 12:04
Last Modified: 17 Apr 2017 17:30
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/300784

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