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Principles of ECAP-conform as a continuous process for achieving grain refinement: application to an aluminum alloy,

Principles of ECAP-conform as a continuous process for achieving grain refinement: application to an aluminum alloy,
Principles of ECAP-conform as a continuous process for achieving grain refinement: application to an aluminum alloy,
Equal-channel angular pressing (ECAP) combined with the Conform process provides a solution for the continuous production of ultrafine-grained materials. Rods of a commercial Al-6061 alloy were processed by ECAP–Conform at room temperature for up to a total of four passes.

Microstructural observations showed significant grain refinement but with elongated grains after four passes with average widths of not, vert, similar150 nm and lengths of not, vert, similar1.2 ?m when viewed on the longitudinal planes. Microhardness measurements after a single pass revealed inhomogeneities both on the cross-sectional planes and along the rod. After processing through four passes there was reasonable homogeneity throughout the rod.

Measurements of the shear strengths in two orthogonal directions perpendicular to the extrusion axis showed significant strengthening after ECAP–Conform and there was no evidence for any plastic anisotropy after processing through four passes.
conform, equal-channel angular pressing, hardness, homogeneity, plastic anisotropy
1359-6454
1379-1386
Xu, Cheng
af526865-aee4-4ef6-8174-def5c38149a2
Schroeder, Steven
237bc0b5-b9c7-4579-9b82-5a1c40375ee9
Berbon, Patrick B.
6878ac30-d763-4307-8125-e43ff069d106
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Xu, Cheng
af526865-aee4-4ef6-8174-def5c38149a2
Schroeder, Steven
237bc0b5-b9c7-4579-9b82-5a1c40375ee9
Berbon, Patrick B.
6878ac30-d763-4307-8125-e43ff069d106
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Xu, Cheng, Schroeder, Steven, Berbon, Patrick B. and Langdon, Terence G. (2010) Principles of ECAP-conform as a continuous process for achieving grain refinement: application to an aluminum alloy,. Acta Materialia, 58 (4), 1379-1386. (doi:10.1016/j.actamat.2009.10.044).

Record type: Article

Abstract

Equal-channel angular pressing (ECAP) combined with the Conform process provides a solution for the continuous production of ultrafine-grained materials. Rods of a commercial Al-6061 alloy were processed by ECAP–Conform at room temperature for up to a total of four passes.

Microstructural observations showed significant grain refinement but with elongated grains after four passes with average widths of not, vert, similar150 nm and lengths of not, vert, similar1.2 ?m when viewed on the longitudinal planes. Microhardness measurements after a single pass revealed inhomogeneities both on the cross-sectional planes and along the rod. After processing through four passes there was reasonable homogeneity throughout the rod.

Measurements of the shear strengths in two orthogonal directions perpendicular to the extrusion axis showed significant strengthening after ECAP–Conform and there was no evidence for any plastic anisotropy after processing through four passes.

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More information

Published date: February 2010
Keywords: conform, equal-channel angular pressing, hardness, homogeneity, plastic anisotropy
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 146573
URI: http://eprints.soton.ac.uk/id/eprint/146573
ISSN: 1359-6454
PURE UUID: a50b5533-0165-4162-82b0-6ce3f0d3cad1
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 21 Apr 2010 15:28
Last modified: 14 Mar 2024 02:47

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Contributors

Author: Cheng Xu
Author: Steven Schroeder
Author: Patrick B. Berbon

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