The University of Southampton
University of Southampton Institutional Repository

A model for the electrical conductivity of peak-aged and overaged Al-Zn-Mg-Cu alloys

A model for the electrical conductivity of peak-aged and overaged Al-Zn-Mg-Cu alloys
A model for the electrical conductivity of peak-aged and overaged Al-Zn-Mg-Cu alloys
A physically based model for the electrical conductivity of peak-aged and overaged Al-Zn-Mg-Cu (7xxx series) alloys is presented. The model includes calculations of the ?- and the S-phase solvus (using a regular-solution model), taking account of the capillary effect and ? coarsening. It takes account of the conductivity of grains (incorporating dissolved alloying elements, undissolved particles, and precipitates) and solute-depleted areas at the grain boundaries. Data from optical microscopy, differential scanning calorimetry (DSC), scanning electron microscopy (SEM) with energy-dispersive X-ray spectrometry (EDS), and transmission electron microscopy (TEM) are consistent with the model and its predictions. The model has been successfully used to fit and predict the conductivity data of a set of 7xxx alloys including both Zr-containing alloys and Cr-containing alloys under various aging conditions, achieving an accuracy of about 1 pct in predicting unseen conductivity data from this set of alloys.
1073-5623
899-911
Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Li, X.M.
e6343471-9722-407a-8bea-5b9a6bbf2d78
Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Li, X.M.
e6343471-9722-407a-8bea-5b9a6bbf2d78

Starink, M.J. and Li, X.M. (2003) A model for the electrical conductivity of peak-aged and overaged Al-Zn-Mg-Cu alloys. Metallurgical and Materials Transactions A, 34A (4), 899-911.

Record type: Article

Abstract

A physically based model for the electrical conductivity of peak-aged and overaged Al-Zn-Mg-Cu (7xxx series) alloys is presented. The model includes calculations of the ?- and the S-phase solvus (using a regular-solution model), taking account of the capillary effect and ? coarsening. It takes account of the conductivity of grains (incorporating dissolved alloying elements, undissolved particles, and precipitates) and solute-depleted areas at the grain boundaries. Data from optical microscopy, differential scanning calorimetry (DSC), scanning electron microscopy (SEM) with energy-dispersive X-ray spectrometry (EDS), and transmission electron microscopy (TEM) are consistent with the model and its predictions. The model has been successfully used to fit and predict the conductivity data of a set of 7xxx alloys including both Zr-containing alloys and Cr-containing alloys under various aging conditions, achieving an accuracy of about 1 pct in predicting unseen conductivity data from this set of alloys.

Text
Starink_&_Li_Metall_Mater_Trans_2003.pdf - Accepted Manuscript
Download (2MB)
Text
Starink_&_Li_2003_7xxx_conductivity.pdf - Version of Record
Restricted to Registered users only
Download (3MB)
Request a copy

More information

Published date: 2003

Identifiers

Local EPrints ID: 22453
URI: http://eprints.soton.ac.uk/id/eprint/22453
ISSN: 1073-5623
PURE UUID: 7450d315-418a-44bf-abc4-dae2c419bb07

Catalogue record

Date deposited: 24 Mar 2006
Last modified: 15 Mar 2024 06:38

Export record

Contributors

Author: M.J. Starink
Author: X.M. Li

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.

×