An unusual extrusion texture in Mg-Gd-Y-Zr alloys

Alizadeh, Reza, Mahmudi, Reza, Ngan, Alfonso H.W. and Langdon, Terence G. (2016) An unusual extrusion texture in Mg-Gd-Y-Zr alloys. Advanced Engineering Materials, 18 (6), 1044-1049. (doi:10.1002/adem.201500516).

Record type: Article

Abstract

Texture evolution is studied by EBSD in Mg–9Gd–4Y–0.4Zr (GW94), Mg–5Gd–4Y–0.4Zr (GW54), and Mg–5Gd–0.4Zr (GW50) alloys after processing with two extrusion-ratios of 19:1 and 8:1. While the alloys show common extrusion textures at the low extrusion-ratio of 8:1, an unusual extrusion texture is observed in the GW94 alloy at the high extrusion-ratio of 19:1 with the (0001) basal planes aligned perpendicular to the extrusion axis. This unusual texture decreases at lower extrusion-ratios and/or lower alloy contents. It is proposed that rare-earth (RE) elements modify the texture by retarding recrystallization in solute drag effects on grain boundaries and pinning effects of RE-rich precipitates.

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e-pub ahead of print date: 3 January 2016

Published date: June 2016

Keywords: unusual, extrusion, texture, mg-gd-y-zr, alloys

Organisations: Engineering Mats & Surface Engineerg Gp, Engineering Science Unit, Faculty of Engineering and the Environment

Identifiers

Local EPrints ID: 388014

URI: http://eprints.soton.ac.uk/id/eprint/388014

DOI: doi:10.1002/adem.201500516

ISSN: 1438-1656

PURE UUID: 89b4557a-08a4-4f75-ba3a-e9b86f5ab9dd

ORCID for Terence G. Langdon:

orcid.org/0000-0003-3541-9250

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Date deposited: 17 Feb 2016 15:32

Last modified: 17 Dec 2019 01:50

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Contributors

Author: Reza Alizadeh

Author: Reza Mahmudi

Author: Alfonso H.W. Ngan

Author: Terence G. Langdon

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