The microstructural characteristics of ultrafine-grained nickel
The microstructural characteristics of ultrafine-grained nickel
A detailed investigation was conducted to evaluate the microstructural characteristics in samples of pure nickel processed using three different procedures of severe plastic deformation (SPD): equal-channel angular pressing (ECAP), high-pressure torsion (HPT) and a combination of ECAP and HPT. Several different experimental techniques were employed to measure the grain size distributions, the textures, the distributions of the misorientation angles and the boundary surface energies in the as-processed materials. It is shown that a combination of ECAP and HPT leads both to a greater refinement in the microstructure and to a smaller fraction of boundaries having low angles of misorientation. The estimated boundary surface energies were higher than anticipated from data for coarse-grained materials and the difference is attributed to the non-equilibrium character of many of the interfaces after SPD processing.
nickel, equal channel angular pressing (ecap), high-pressure torsion (hpt), differential scanning calorimetry (dsc), orientation imaging microscopy (oim)
377-389
Zhilyaev, A.P.
fe22cdc1-590d-4bbd-bd1a-6ca18e3ee971
Kim, B.-K.
303fd2a6-ff48-42df-bf2c-6ab6e1d1d7f0
Szpunar, J.A.
7547e681-551d-448d-8d44-d0d26eb5ff2e
Baró, M.D.
b94294fe-1351-49eb-957c-550bbb8e7bbd
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
2005
Zhilyaev, A.P.
fe22cdc1-590d-4bbd-bd1a-6ca18e3ee971
Kim, B.-K.
303fd2a6-ff48-42df-bf2c-6ab6e1d1d7f0
Szpunar, J.A.
7547e681-551d-448d-8d44-d0d26eb5ff2e
Baró, M.D.
b94294fe-1351-49eb-957c-550bbb8e7bbd
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Zhilyaev, A.P., Kim, B.-K., Szpunar, J.A., Baró, M.D. and Langdon, T.G.
(2005)
The microstructural characteristics of ultrafine-grained nickel.
Materials Science and Engineering: A, 391 (1-2), .
(doi:10.1016/j.msea.2004.09.030).
Abstract
A detailed investigation was conducted to evaluate the microstructural characteristics in samples of pure nickel processed using three different procedures of severe plastic deformation (SPD): equal-channel angular pressing (ECAP), high-pressure torsion (HPT) and a combination of ECAP and HPT. Several different experimental techniques were employed to measure the grain size distributions, the textures, the distributions of the misorientation angles and the boundary surface energies in the as-processed materials. It is shown that a combination of ECAP and HPT leads both to a greater refinement in the microstructure and to a smaller fraction of boundaries having low angles of misorientation. The estimated boundary surface energies were higher than anticipated from data for coarse-grained materials and the difference is attributed to the non-equilibrium character of many of the interfaces after SPD processing.
This record has no associated files available for download.
More information
Published date: 2005
Keywords:
nickel, equal channel angular pressing (ecap), high-pressure torsion (hpt), differential scanning calorimetry (dsc), orientation imaging microscopy (oim)
Organisations:
Engineering Sciences
Identifiers
Local EPrints ID: 23846
URI: http://eprints.soton.ac.uk/id/eprint/23846
ISSN: 0921-5093
PURE UUID: 5727bbe7-dfc6-4432-bfe6-54c525064473
Catalogue record
Date deposited: 22 Mar 2006
Last modified: 16 Mar 2024 03:28
Export record
Altmetrics
Contributors
Author:
A.P. Zhilyaev
Author:
B.-K. Kim
Author:
J.A. Szpunar
Author:
M.D. Baró
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics