Strain softening in nanocrystalline Ni–Fe alloy induced by large HPT revolutions
Strain softening in nanocrystalline Ni–Fe alloy induced by large HPT revolutions
The influence of strain on the hardness of an electrochemically deposited nanocrystalline Ni–20 wt.% Fe alloy processed by high-pressure torsion (HPT) for 20 and 30 revolutions was investigated. Strain softening followed by a stable hardness value was observed. Structural investigations revealed that, while dislocation density was important, continuous grain growth played a major role in the strain softening. The stable hardness indicates that an equilibrium structure was achieved, supporting a dynamic balance between deformation-induced grain growth and grain refinement and between deformation-induced dislocation generation and dislocation annihilation
4807-4811
Ni, S.
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Wang, Y.
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Liao, X.Z.
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Figueiredo, Roberto B.
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Li, H.Q.
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Zhao, Y.H.
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Lavernia, E.J.
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Ringer, S.P.
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Langdon, T.G.
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Zhu, Y.T.
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May 2011
Ni, S.
c17ef5a0-a786-46ea-8c68-2cddc3c6a9fc
Wang, Y.
23c775f0-3cac-44d5-9e16-2098959c493b
Liao, X.Z.
f0645a6d-aee1-4d28-aa13-f1b00fdedc41
Figueiredo, Roberto B.
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Li, H.Q.
f75bd557-296e-47bb-98de-f302465c59f5
Zhao, Y.H.
4fea315b-8c7d-4bb1-badc-236b309ef228
Lavernia, E.J.
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Ringer, S.P.
2b986d4b-e93c-4801-9a1b-b16b39c30242
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Zhu, Y.T.
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Ni, S., Wang, Y., Liao, X.Z., Figueiredo, Roberto B., Li, H.Q., Zhao, Y.H., Lavernia, E.J., Ringer, S.P., Langdon, T.G. and Zhu, Y.T.
(2011)
Strain softening in nanocrystalline Ni–Fe alloy induced by large HPT revolutions.
Materials Science and Engineering: A, 528 (13-14), .
(doi:10.1016/j.msea.2011.03.007).
Abstract
The influence of strain on the hardness of an electrochemically deposited nanocrystalline Ni–20 wt.% Fe alloy processed by high-pressure torsion (HPT) for 20 and 30 revolutions was investigated. Strain softening followed by a stable hardness value was observed. Structural investigations revealed that, while dislocation density was important, continuous grain growth played a major role in the strain softening. The stable hardness indicates that an equilibrium structure was achieved, supporting a dynamic balance between deformation-induced grain growth and grain refinement and between deformation-induced dislocation generation and dislocation annihilation
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Published date: May 2011
Organisations:
Engineering Science Unit
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Local EPrints ID: 194809
URI: http://eprints.soton.ac.uk/id/eprint/194809
ISSN: 0921-5093
PURE UUID: d94c670a-0ec5-434c-a13b-409e87ee6dbd
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Date deposited: 10 Aug 2011 14:37
Last modified: 15 Mar 2024 03:13
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Author:
S. Ni
Author:
Y. Wang
Author:
X.Z. Liao
Author:
Roberto B. Figueiredo
Author:
H.Q. Li
Author:
Y.H. Zhao
Author:
E.J. Lavernia
Author:
S.P. Ringer
Author:
Y.T. Zhu
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