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An examination of the saturation microstructures achieved in ultrafine-grained metals processed by high-pressure torsion

An examination of the saturation microstructures achieved in ultrafine-grained metals processed by high-pressure torsion
An examination of the saturation microstructures achieved in ultrafine-grained metals processed by high-pressure torsion
Experiments were conducted on two commercial alloys, a Cu–0.1%Zr alloy and an Al-7075 aluminum alloy, to investigate the significance of the saturation microstructure which is achieved after processing by high-pressure torsion (HPT). Samples were processed by HPT and also by a combination of equal-channel angular pressing (ECAP) followed by HPT. The results show that the saturation conditions are dependent upon the grain size in the material immediately prior to the HPT processing. Additional grain refinement may be achieved in HPT by initially processing the material to produce an ultrafine-grain size before conducting the processing by HPT.
aluminum alloy, copper alloy, hardness, high-pressure torsion, ultrafine grains
2238-7854
319-326
Sabbaghianrad, Shima
2dbc35ee-f341-42fd-9081-94ef3e9b10b0
Wongsa-Ngam, Jittraporn
3a196159-d8e5-4658-a47b-a6f6c5a7dcc7
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Sabbaghianrad, Shima
2dbc35ee-f341-42fd-9081-94ef3e9b10b0
Wongsa-Ngam, Jittraporn
3a196159-d8e5-4658-a47b-a6f6c5a7dcc7
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Sabbaghianrad, Shima, Wongsa-Ngam, Jittraporn, Kawasaki, Megumi and Langdon, Terence G. (2014) An examination of the saturation microstructures achieved in ultrafine-grained metals processed by high-pressure torsion. Journal of Materials Research and Technology, 3 (4), 319-326. (doi:10.1016/j.jmrt.2014.10.002).

Record type: Article

Abstract

Experiments were conducted on two commercial alloys, a Cu–0.1%Zr alloy and an Al-7075 aluminum alloy, to investigate the significance of the saturation microstructure which is achieved after processing by high-pressure torsion (HPT). Samples were processed by HPT and also by a combination of equal-channel angular pressing (ECAP) followed by HPT. The results show that the saturation conditions are dependent upon the grain size in the material immediately prior to the HPT processing. Additional grain refinement may be achieved in HPT by initially processing the material to produce an ultrafine-grain size before conducting the processing by HPT.

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Submitted date: 20 May 2014
Accepted/In Press date: 2 October 2014
e-pub ahead of print date: 8 November 2014
Published date: 2014
Keywords: aluminum alloy, copper alloy, hardness, high-pressure torsion, ultrafine grains
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 377246
URI: http://eprints.soton.ac.uk/id/eprint/377246
ISSN: 2238-7854
PURE UUID: 60ea6d52-c3fd-4516-98e2-f6b479190bfa
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 20 May 2015 15:21
Last modified: 21 Nov 2021 02:52

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Contributors

Author: Shima Sabbaghianrad
Author: Jittraporn Wongsa-Ngam
Author: Megumi Kawasaki

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