Grain refinement response during twist extrusion of an Al-0.13 % Mg alloy

Marco Berta, Dmitry Orlov, Philip B. Prangnell

Research output: Contribution to journalArticlepeer-review

Abstract

Twist extrusion is a recently developed method of severe plastic deformation that principally uses torsion to generate high strains in a repeatedly extruded billet, while maintaining a constant cross-section. The method thus results in a deformation gradient across the billet section. To date, the grain refinement behaviour of alloys deformed by twist extrusion have only been investigated qualitatively. In this study high resolution electron backscattered diffraction has been used to quantify the deformation structures produced by twist extrusion, in a model, single-phase, Al-0.13 % Mg alloy, with the aim of investigating the potential of the technique for producing ultra-fine grained metals, as well as the homogeneity of the microstructure and strain distribution in processed billets.

Original languageEnglish
Pages (from-to)200-204
Number of pages5
JournalInternational Journal of Materials Research
Volume98
Issue number3
DOIs
Publication statusPublished - 2007 Mar
Externally publishedYes

Subject classification (UKÄ)

  • Metallurgy and Metallic Materials

Free keywords

  • Aluminium
  • Severe plastic deformation
  • Twist extrusion
  • Ultrafine grains

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