Towards superstrength of nanostructured metals and alloys processed by SPD
Towards superstrength of nanostructured metals and alloys processed by SPD
The metals and alloys subjected to severe plastic deformation can possess not only ultrafine-grained (UFG) structure but also specific nanostructural features, such as non-equilibrium grain boundaries, nanotwins, grain boundary segregations and nano particles. The Authors consider in the present work the role of these features in exhibition of high strength of nanostructured metals and alloys. In particular, it is demonstrated that the presence of grain boundary segregations and non-equilibrium boundaries can result in yield stress values that considerably exceed those predicted from the Hall-Petch relation for the given materials
severe plastic deformation (SPD), bulk nanostructured metals and alloys, superstrength, grain boundaries, segregations
1-9
Valiev, R.Z
986fbab5-cc59-4c29-9993-aeb055c3d204
Enikeev, N.A.
e74683bc-9f1d-43be-b62b-5b1fc8b1fbfb
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
2011
Valiev, R.Z
986fbab5-cc59-4c29-9993-aeb055c3d204
Enikeev, N.A.
e74683bc-9f1d-43be-b62b-5b1fc8b1fbfb
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Valiev, R.Z, Enikeev, N.A. and Langdon, T.G.
(2011)
Towards superstrength of nanostructured metals and alloys processed by SPD.
Kovové Materiály – Metallic Materials, 49 (1), .
Abstract
The metals and alloys subjected to severe plastic deformation can possess not only ultrafine-grained (UFG) structure but also specific nanostructural features, such as non-equilibrium grain boundaries, nanotwins, grain boundary segregations and nano particles. The Authors consider in the present work the role of these features in exhibition of high strength of nanostructured metals and alloys. In particular, it is demonstrated that the presence of grain boundary segregations and non-equilibrium boundaries can result in yield stress values that considerably exceed those predicted from the Hall-Petch relation for the given materials
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Published date: 2011
Keywords:
severe plastic deformation (SPD), bulk nanostructured metals and alloys, superstrength, grain boundaries, segregations
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 188531
URI: http://eprints.soton.ac.uk/id/eprint/188531
PURE UUID: bd008ce4-3072-47f9-842f-ed2232d713c1
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Date deposited: 26 May 2011 07:22
Last modified: 11 Dec 2021 03:48
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Contributors
Author:
R.Z Valiev
Author:
N.A. Enikeev
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