The University of Southampton
University of Southampton Institutional Repository

Microstructural evolution and mechanical properties of a two-phase Cu–Ag alloy processed by high-pressure torsion to ultrahigh strains

Microstructural evolution and mechanical properties of a two-phase Cu–Ag alloy processed by high-pressure torsion to ultrahigh strains
Microstructural evolution and mechanical properties of a two-phase Cu–Ag alloy processed by high-pressure torsion to ultrahigh strains
Disks of a coarse-grained Cu–28 wt.% Ag alloy were processed by high-pressure torsion up to 20 revolutions to reveal the microstructural evolution and mechanical properties. The eutectic shows a faster evolution process than the Cu matrix. A banded structure forms in the Cu matrix, and both the eutectic spacing and the band width decrease with increasing shear strain. After 20 revolutions, the substructure may even diminish in the Cu matrix. The microhardness increases with increasing revolutions, and a saturation microhardness is ultimately achieved. After 20 revolutions, the tensile strength was improved to 1420 MPa, and the failure mode of the sample was transferred from necking to full shearing without plasticity.
cu–ag alloy, high-pressure torsion, microstructure, hardness, fracture
1359-6454
2783-2796
Tian, Y.Z.
bda43954-296b-4f4e-8a9d-b35894da6b3e
Wu, S.D.
6df11381-5cbc-4b9b-ab65-b18b15272221
Zhang, Z.F.
32ae683a-dc37-4bb4-89b3-ecf266a4c4c9
Figueiredo, R.B.
1b4f5fa6-b201-4435-8f5e-13833fc8d504
Gao, N.
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Tian, Y.Z.
bda43954-296b-4f4e-8a9d-b35894da6b3e
Wu, S.D.
6df11381-5cbc-4b9b-ab65-b18b15272221
Zhang, Z.F.
32ae683a-dc37-4bb4-89b3-ecf266a4c4c9
Figueiredo, R.B.
1b4f5fa6-b201-4435-8f5e-13833fc8d504
Gao, N.
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Tian, Y.Z., Wu, S.D., Zhang, Z.F., Figueiredo, R.B., Gao, N. and Langdon, T.G. (2011) Microstructural evolution and mechanical properties of a two-phase Cu–Ag alloy processed by high-pressure torsion to ultrahigh strains. Acta Materialia, 59 (7), 2783-2796. (doi:10.1016/j.actamat.2011.01.017).

Record type: Article

Abstract

Disks of a coarse-grained Cu–28 wt.% Ag alloy were processed by high-pressure torsion up to 20 revolutions to reveal the microstructural evolution and mechanical properties. The eutectic shows a faster evolution process than the Cu matrix. A banded structure forms in the Cu matrix, and both the eutectic spacing and the band width decrease with increasing shear strain. After 20 revolutions, the substructure may even diminish in the Cu matrix. The microhardness increases with increasing revolutions, and a saturation microhardness is ultimately achieved. After 20 revolutions, the tensile strength was improved to 1420 MPa, and the failure mode of the sample was transferred from necking to full shearing without plasticity.

This record has no associated files available for download.

More information

Published date: April 2011
Keywords: cu–ag alloy, high-pressure torsion, microstructure, hardness, fracture
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 194481
URI: http://eprints.soton.ac.uk/id/eprint/194481
ISSN: 1359-6454
PURE UUID: 21845ba3-255f-4e1a-bc0a-500fc12fa4ab
ORCID for N. Gao: ORCID iD orcid.org/0000-0002-7430-0319
ORCID for T.G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 28 Jul 2011 14:18
Last modified: 15 Mar 2024 03:13

Export record

Altmetrics

Contributors

Author: Y.Z. Tian
Author: S.D. Wu
Author: Z.F. Zhang
Author: R.B. Figueiredo
Author: N. Gao ORCID iD
Author: T.G. Langdon ORCID iD

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

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×