The University of Southampton
University of Southampton Institutional Repository

Superplasticity of a fine-grained Mg–9Gd–4Y–0.4Zr alloy evaluated using shear punch testing

Superplasticity of a fine-grained Mg–9Gd–4Y–0.4Zr alloy evaluated using shear punch testing
Superplasticity of a fine-grained Mg–9Gd–4Y–0.4Zr alloy evaluated using shear punch testing
The superplasticity of an extruded fine-grained Mg–9Gd–4Y–0.4Zr alloy was investigated by measuring the strain rate sensitivity using shear punch testing (SPT). Shear punch tests were conducted at shear strain rates in the range of 3 × 10?3–2 × 10?1 s?1 and at temperatures in the range of 573–773 K. The results indicate the strain rate sensitivity, m, increases from about 0.11 at 573 K to about 0.40 at 723 K and then decreases to 0.32 with a further increase in test temperature. A strain rate sensitivity of 0.40 and an activation energy of 140 kJ/mol are indicative of a superplastic deformation behavior dominated by grain boundary sliding accommodated by lattice diffusion at temperatures above 673 K.
Mg–Gd–Y–Zr alloy, superplasticity, strain rate sensitivity, shear punch
2238-7854
228-232
Alizadeh, Reza
12ca94ae-ee4d-47c4-b99c-ef27b6187027
Mahmudi, Reza
d3db324a-867a-4e9f-91be-b103fc11e22d
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Alizadeh, Reza
12ca94ae-ee4d-47c4-b99c-ef27b6187027
Mahmudi, Reza
d3db324a-867a-4e9f-91be-b103fc11e22d
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Alizadeh, Reza, Mahmudi, Reza and Langdon, Terence G. (2014) Superplasticity of a fine-grained Mg–9Gd–4Y–0.4Zr alloy evaluated using shear punch testing. Journal of Materials Research and Technology, 3 (3), 228-232. (doi:10.1016/j.jmrt.2014.04.004).

Record type: Article

Abstract

The superplasticity of an extruded fine-grained Mg–9Gd–4Y–0.4Zr alloy was investigated by measuring the strain rate sensitivity using shear punch testing (SPT). Shear punch tests were conducted at shear strain rates in the range of 3 × 10?3–2 × 10?1 s?1 and at temperatures in the range of 573–773 K. The results indicate the strain rate sensitivity, m, increases from about 0.11 at 573 K to about 0.40 at 723 K and then decreases to 0.32 with a further increase in test temperature. A strain rate sensitivity of 0.40 and an activation energy of 140 kJ/mol are indicative of a superplastic deformation behavior dominated by grain boundary sliding accommodated by lattice diffusion at temperatures above 673 K.

This record has no associated files available for download.

More information

Accepted/In Press date: 30 April 2014
e-pub ahead of print date: June 2014
Published date: July 2014
Keywords: Mg–Gd–Y–Zr alloy, superplasticity, strain rate sensitivity, shear punch
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 377241
URI: http://eprints.soton.ac.uk/id/eprint/377241
ISSN: 2238-7854
PURE UUID: fb106eaa-f69c-4cb9-96e5-5d510de49fc0
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 20 May 2015 10:28
Last modified: 15 Mar 2024 03:13

Export record

Altmetrics

Contributors

Author: Reza Alizadeh
Author: Reza Mahmudi

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.

×