The effect of grain boundary sliding and strain rate sensitivity on the ductility of ultrafine-grained materials
The effect of grain boundary sliding and strain rate sensitivity on the ductility of ultrafine-grained materials
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.
677-682
Chinh, N.Q.
75241499-642b-477a-b457-cd08bcab4b9d
Csanádi, T.
e5dc4185-eb9b-443f-876e-66d8f8d16fdc
Gubicza, J.
4b1812c5-5905-46be-8c26-51c25ef82722
Valiev, R.Z.
f32c36f3-ce3a-4531-b8ef-0b18ad6626da
Straumal, B.B.
5f9aeab2-5887-4bfb-8bf2-e953cb177993
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
2011
Chinh, N.Q.
75241499-642b-477a-b457-cd08bcab4b9d
Csanádi, T.
e5dc4185-eb9b-443f-876e-66d8f8d16fdc
Gubicza, J.
4b1812c5-5905-46be-8c26-51c25ef82722
Valiev, R.Z.
f32c36f3-ce3a-4531-b8ef-0b18ad6626da
Straumal, B.B.
5f9aeab2-5887-4bfb-8bf2-e953cb177993
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Chinh, N.Q., Csanádi, T., Gubicza, J., Valiev, R.Z., Straumal, B.B. and Langdon, T.G.
(2011)
The effect of grain boundary sliding and strain rate sensitivity on the ductility of ultrafine-grained materials.
Materials Science Forum, 667-669, .
(doi:10.4028/www.scientific.net/MSF.667-669.677).
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.
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Published date: 2011
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 187567
URI: http://eprints.soton.ac.uk/id/eprint/187567
ISSN: 1662-9752
PURE UUID: ba05fd99-6b2b-48b3-ab90-e13ac129ae62
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Date deposited: 17 May 2011 15:33
Last modified: 15 Mar 2024 03:13
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Author:
N.Q. Chinh
Author:
T. Csanádi
Author:
J. Gubicza
Author:
R.Z. Valiev
Author:
B.B. Straumal
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