Effects of Zn/Y ratio on microstructure and mechanical properties of Mg-Zn-Y alloys

Ju Yeon Lee, Do Hyung Kim, Hyun Kyu Lim, Do Hyang Kim

Research output: Contribution to journalArticle

233 Citations (Scopus)

Abstract

Microstructures and mechanical properties of Mg-Zn-Y alloys containing icosahedral phase (I-phase) as a secondary solidification phase have been investigated in the composition range where the total solute content (Zn and Y) is less than 10 wt.%. The optimum Zn / Y ratio for the formation of two-phase microstructure consisting of α-Mg and I-phase is 5∼7. The strength increases with increasing total solute content (Zn and Y), i.e. with increasing volume fraction of I-phase. In particular, the alloys containing I-phase exhibit high elongation to failure, > 25%, which is ascribed to the low interfacial energy between the I-phase particle and surrounding α-Mg crystalline matrix.

Original languageEnglish
Pages (from-to)3801-3805
Number of pages5
JournalMaterials Letters
Volume59
Issue number29-30
DOIs
Publication statusPublished - 2005 Dec

All Science Journal Classification (ASJC) codes

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

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