The University of Southampton
University of Southampton Institutional Repository

Segregation of solute elements at grain boundaries in an ultrafine grained Al–Zn–Mg–Cu alloy

Sha, Gang, Yao, Lan, Liao, Xiaozhou, Ringer, Simon P., Duan, Zhi Chao and Langdon, Terence G. (2011) Segregation of solute elements at grain boundaries in an ultrafine grained Al–Zn–Mg–Cu alloy [in special issue: 52nd International Field Emission Symposium] Ultramicroscopy, 111, (6), pp. 500-505. (doi:10.1016/j.ultramic.2010.11.013).

Record type: Article


The solute segregation at grain boundaries (GBs) of an ultrafine grained (UFG) Al–Zn–Mg–Cu alloy processed by equal-channel angular pressing (ECAP) at 200 °C was characterised using three-dimensional atom probe. Mg and Cu segregate strongly to the grain boundaries. In contrast, Zn does not always show clear segregation and may even show depletion near the grain boundaries. Trace element Si selectively segregates at some GBs. An increase in the number of ECAP passes leads to a decrease in the grain size but an increase in solute segregation at the boundaries. The significant segregation of alloying elements at the boundaries of ultrafine-grained alloys implies that less solutes will be available in the matrix for precipitation with a decrease in the average grain size

Full text not available from this repository.

More information

e-pub ahead of print date: 19 November 2010
Published date: May 2011
Keywords: aluminium alloy, atom probe tomography, equal-channel angular pressing, grain boundaries, solute segregation
Organisations: Bioengineering Group


Local EPrints ID: 335074
ISSN: 0304-3991
PURE UUID: 82e18935-05d4-44bb-8ee4-c3f22971b6b5
ORCID for Terence G. Langdon: ORCID iD

Catalogue record

Date deposited: 12 Mar 2012 11:29
Last modified: 18 Jul 2017 06:11

Export record



Author: Gang Sha
Author: Lan Yao
Author: Xiaozhou Liao
Author: Simon P. Ringer
Author: Zhi Chao Duan

University divisions

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 supports OAI 2.0 with a base URL of

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.