Solidification and microstructure control of Mg-rich alloys in the Mg-Zn-Y ternary system

E. S. Park, S. Yi, J. B. Ok, D. H. Bae, W. T. Kim, D. H. Kim

Research output: Contribution to journalConference articlepeer-review

8 Citations (Scopus)

Abstract

Solidification microstructures of Mg rich Mg-Zn-Y alloys were studied by using optical microscopy, scanning electron microscopy and transmission electron microscopy. Pseudo eutectic reaction (Liquid → α-Mg + icosahedral phase) takes place during solidification. Alloys containing high Mg content solidifies by primary crystallization of α-Mg followed by the eutectic reaction at interdendritic region. Mg68Zn28Y4 alloy solidifies by primary crystallization of I-phase followed by the eutectic reaction into a mixture of α-Mg and I-phase. Occasionally D-phase and Mg4Zn7 phases were observed to form with orientation relationships with previously formed I-phase and D-phase, respectively. The strength of the alloys increased with increasing the volume fraction of I-phase.

Original languageEnglish
Pages (from-to)K251-K256
JournalMaterials Research Society Symposium - Proceedings
Volume643
Publication statusPublished - 2001
EventQuasicrystals - Preparations, Properties and Applications - Boston, MA, United States
Duration: 2000 Nov 272000 Nov 30

All Science Journal Classification (ASJC) codes

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

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