Grain refinement vs. crystallographic texture: Mechanical anisotropy in a magnesium alloy

D. C. Foley, M. Al-Maharbi, K. T. Hartwig, I. Karaman, L. J. Kecskes, S. N. Mathaudhu

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

A magnesium alloy was subjected to severe plastic deformation via an unconventional equal channel angular extrusion route at decreasing temperatures. This method facilitates incremental grain refinement and enhances formability by activating dynamic recrystallization in the initial steps and suppressing deformation twinning. Compression experiments in three orthogonal directions demonstrated high strength levels in the processed sample, up to 350 MPa in yield and 500 MPa in ultimate strengths. Notable flow stress anisotropy is correlated with the processing texture and microstructure.

Original languageEnglish
Pages (from-to)193-196
Number of pages4
JournalScripta Materialia
Volume64
Issue number2
DOIs
Publication statusPublished - Jan 2011

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Keywords

  • Anisotropy
  • Crystallographic texture
  • Equal channel angular extrusion/pressing
  • Magnesium alloys
  • Ultrafine-grained materials

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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