The University of Southampton
University of Southampton Institutional Repository

Using ball-indentation to evaluate the properties of an unltrafine-grained Al-2% Si Alloy processed by ECAP

Venkateswarlu, K., Das, Gautam, Pramanik, A.K., Xu, Cheng and Langdon, Terence G. (2006) Using ball-indentation to evaluate the properties of an unltrafine-grained Al-2% Si Alloy processed by ECAP Materials Science and Engineering: A, 427, (1-2), pp. 188-194. (doi:10.1016/j.msea.2006.04.053).

Record type: Article


As-cast Al–Si alloys exhibit excellent mechanical properties but these properties may be further improved through processing by equal-channel angular pressing (ECAP). In this investigation, specimens of a hypo-eutectic Al–2% Si alloy were successfully pressed up to a maximum of four passes at room temperature and the microstructures and mechanical properties were evaluated. The results show that pressing through four passes reduces the grain size from ~40 to ~0.70 ?m, reduces the size of the Si particles from ~12.0 to ~1.08 ?m and increases the yield stress and the ultimate tensile strength by a factor of ~2 by comparison with the as-cast alloy. The mechanical properties were examined using a ball-indentation technique (BIT). It is suggested that, since BIT provides the capability of obtaining extensive mechanical data using only a very small sample, it is an ideal technique for evaluating the properties of samples processed by ECAP.

Full text not available from this repository.

More information

Published date: 2006
Keywords: aluminum–silicon alloy, equal channel angular pressing, indentation testing, severe plastic deformation, ultrafine grains
Organisations: Engineering Mats & Surface Engineerg Gp


Local EPrints ID: 43670
ISSN: 0921-5093
PURE UUID: ac4c467c-7ca7-4723-b716-deba7ff7aec4
ORCID for Terence G. Langdon: ORCID iD

Catalogue record

Date deposited: 26 Jan 2007
Last modified: 17 Jul 2017 15:18

Export record



Author: K. Venkateswarlu
Author: Gautam Das
Author: A.K. Pramanik
Author: Cheng Xu

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.