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. In, Wang, Jing Tao, Figueiredo, Roberto B. and Langdon, Terence G. (eds.) Nanomaterials by Severe Plastic Deformation: NanoSPD5. 5th International Conference on Nanomaterials by Severe Plastic Deformation Zurich, Switzerland, Trans Tech, 677-682. (Materials Science Forum, 667-669). (doi:10.4028/www.scientific.net/MSF.667-669.677).
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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:||Book Section|
|Digital Object Identifier (DOI):||doi:10.4028/www.scientific.net/MSF.667-669.677|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)|
|Divisions:||Faculty of Engineering and the Environment > Engineering Sciences > Bioengineering Research Group
|Date Deposited:||29 Feb 2012 12:04|
|Last Modified:||27 Mar 2014 20:19|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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