Anomalous activity of nonbasal dislocations in AZ31 Mg alloys at room temperature

T. Kobayashi, J. Koike, T. Mukai, M. Suzuki, H. Watanabe, K. Maruyama, K. Higashi

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


AZ31 Mg alloy samples were extruded by an equal channel angular extrusion (ECAE) process and subsequently annealed to obtain fine-grained material with a low dislocation density. Tensile tests at room temperature exhibited an apparent steady-state deformation region and a large tensile elongation of 47%. The deformed microstructure at an elongation of 2% indicated a substantial cross-slip to nonbasal planes possibly induced by grain-boundary compatibility effects. The nonbasal segments of dislocations were found to consist of 40% of the total dislocation density at a yield anisotropy factor of only 1.1 instead of an expected value of 100 from single-crystal experiments.

Original languageEnglish
Pages (from-to)231-236
Number of pages6
JournalMaterials Science Forum
Issue numberI
Publication statusPublished - 2003
EventProceedings of the Second Osaka International Conference on Platform Science and Technology for Advanced Magnesium Alloys 2003 - Osaka, Japan
Duration: 2003 Jan 262003 Jan 30


  • AZ31
  • Dislocations
  • ECAE
  • Grain boundary

ASJC Scopus subject areas

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


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