An examination of microstructural evolution in a Cu-Ni-Si alloy processed by HPT and ECAP
An examination of microstructural evolution in a Cu-Ni-Si alloy processed by HPT and ECAP
Experiments were conducted to evaluate the evolution of hardness and microstructure in a commercial Cu–2.5Ni–0.6Si alloy (in wt%) after processing using High-Pressure Torsion (HPT) at room temperature with an imposed pressure of 6.0 GPa and Equal-Channel Angular Pressing (ECAP) at 423 K using a channel angle of 135°. Hardness measurements, X-ray diffraction and transmission electron microscopy (TEM) were used for microstructural evaluation and the results show a general consistency between these various techniques. The changes in the crystallite size and the dislocation structure as a function of the number of HPT revolutions and ECAP passes are discussed and compared with the results of the TEM observations. The detailed microstructural observations show a gradual evolution with increasing numbers of revolutions and passes with a saturation after 3 turns of HPT but with no saturation attained in ECAP even after 12 passes because of the lower imposed strain
cu-ni-si alloy, equal-channel angular pressing, hardness, high-pressure torsion, x-ray diffraction
149-145
Khereddine, A.Y.
efcb32e2-ee8d-44fd-b624-d13d61dfa63f
Larbi, F.H.
da8240a4-7530-40a7-af9d-0216185e4be8
Kawasaki, M.
d0ce18b9-8403-4db2-9cb2-3a6165f288a6
Baudin, T.
7b1243e5-273f-45c6-b806-13663d7c1743
Bradai, D.
dfc10bba-9e86-4e1d-b8fe-17c109d5f9fd
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
August 2013
Khereddine, A.Y.
efcb32e2-ee8d-44fd-b624-d13d61dfa63f
Larbi, F.H.
da8240a4-7530-40a7-af9d-0216185e4be8
Kawasaki, M.
d0ce18b9-8403-4db2-9cb2-3a6165f288a6
Baudin, T.
7b1243e5-273f-45c6-b806-13663d7c1743
Bradai, D.
dfc10bba-9e86-4e1d-b8fe-17c109d5f9fd
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Khereddine, A.Y., Larbi, F.H., Kawasaki, M., Baudin, T., Bradai, D. and Langdon, T.G.
(2013)
An examination of microstructural evolution in a Cu-Ni-Si alloy processed by HPT and ECAP.
Materials Science and Engineering: A, 576, .
(doi:10.1016/j.msea.2013.04.004).
Abstract
Experiments were conducted to evaluate the evolution of hardness and microstructure in a commercial Cu–2.5Ni–0.6Si alloy (in wt%) after processing using High-Pressure Torsion (HPT) at room temperature with an imposed pressure of 6.0 GPa and Equal-Channel Angular Pressing (ECAP) at 423 K using a channel angle of 135°. Hardness measurements, X-ray diffraction and transmission electron microscopy (TEM) were used for microstructural evaluation and the results show a general consistency between these various techniques. The changes in the crystallite size and the dislocation structure as a function of the number of HPT revolutions and ECAP passes are discussed and compared with the results of the TEM observations. The detailed microstructural observations show a gradual evolution with increasing numbers of revolutions and passes with a saturation after 3 turns of HPT but with no saturation attained in ECAP even after 12 passes because of the lower imposed strain
This record has no associated files available for download.
More information
Published date: August 2013
Keywords:
cu-ni-si alloy, equal-channel angular pressing, hardness, high-pressure torsion, x-ray diffraction
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 359473
URI: http://eprints.soton.ac.uk/id/eprint/359473
ISSN: 0921-5093
PURE UUID: abb66d1d-f494-413a-848c-9f664ee28bf8
Catalogue record
Date deposited: 04 Nov 2013 14:23
Last modified: 15 Mar 2024 03:13
Export record
Altmetrics
Contributors
Author:
A.Y. Khereddine
Author:
F.H. Larbi
Author:
M. Kawasaki
Author:
T. Baudin
Author:
D. Bradai
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
