Improving the mechanical properties of magnesium and a magnesium alloy through severe plastic deformation

Akihiro Yamashita, Zenji Horita, Terence G. Langdon

Research output: Contribution to journalArticlepeer-review

590 Citations (Scopus)

Abstract

Pure Mg and Mg alloys generally exhibit only limited ductilities at ambient temperatures. Experiments were conducted to evaluate the potential for improving the mechanical properties of pure Mg and and Mg-0.9% Al alloy at room temperature by subjecting these materials to severe plastic deformation through the procedure of equal-channel angular pressing (ECAP). It is shown that ECAP may be applied successfully to these materials at elevated temperatures and this leads to grain refinement due to the occurrence of recrystallization during the pressing process and to significant improvements in the strength and ductility of these materials. Since these improvements are apparent after only a single pass through the ECAP die, it is concluded that the introduction of ECAP provides a simple and effective procedure for improving the ambient temperature mechanical properties of materials, such as hcp metals, where the measured ductilities are generally limited.

Original languageEnglish
Pages (from-to)142-147
Number of pages6
JournalMaterials Science and Engineering A
Volume300
Issue number1-2
DOIs
Publication statusPublished - Feb 28 2001

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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