Application of quasicrystalline particles as a strengthening phase in mg-zn-y alloys

DongHyun Bae, M. H. Lee, K. T. Kim, W. T. Kim, Do Hyang Kim

Research output: Contribution to journalArticle

209 Citations (Scopus)

Abstract

Fine-grained magnesium alloys reinforced by quasicrystalline particles were easily developed by thermomechanical processes for as-cast Mg-rich Mg-Zn-Y and Mg-Zn-Y-Zr alloys. The deformation behavior of the alloys at room and high temperatures was investigated and compared with that of commercial AZ31, AZ61 and AZ91 alloys. The yield strength of the Mg-Zn-Y alloys, increasing with an increase of the volume fraction of the quasicrystalline phase, is relatively high due to the strengthening effect of the quasicrystalline particles. At high temperatures, the level of flow stress of the Mg-Zn-Y alloys is lower than that of commercial magnesium alloys due to the softness of the eutectic region, but the alloys exhibit much higher elongation since the large number of quasicrystalline particles in the Mg-Zn-Y alloys can effectively prohibit microstructural evolution of the

Original languageEnglish
Pages (from-to)445-450
Number of pages6
JournalJournal of Alloys and Compounds
Volume342
Issue number1-2
DOIs
Publication statusPublished - 2002 Aug 14

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Strengthening (metal)
Magnesium alloys
Microstructural evolution
Plastic flow
Eutectics
Yield stress
Elongation
Volume fraction
Temperature

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

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abstract = "Fine-grained magnesium alloys reinforced by quasicrystalline particles were easily developed by thermomechanical processes for as-cast Mg-rich Mg-Zn-Y and Mg-Zn-Y-Zr alloys. The deformation behavior of the alloys at room and high temperatures was investigated and compared with that of commercial AZ31, AZ61 and AZ91 alloys. The yield strength of the Mg-Zn-Y alloys, increasing with an increase of the volume fraction of the quasicrystalline phase, is relatively high due to the strengthening effect of the quasicrystalline particles. At high temperatures, the level of flow stress of the Mg-Zn-Y alloys is lower than that of commercial magnesium alloys due to the softness of the eutectic region, but the alloys exhibit much higher elongation since the large number of quasicrystalline particles in the Mg-Zn-Y alloys can effectively prohibit microstructural evolution of the",
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Application of quasicrystalline particles as a strengthening phase in mg-zn-y alloys. / Bae, DongHyun; Lee, M. H.; Kim, K. T.; Kim, W. T.; Kim, Do Hyang.

In: Journal of Alloys and Compounds, Vol. 342, No. 1-2, 14.08.2002, p. 445-450.

Research output: Contribution to journalArticle

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