High strength Mg-Zn-Y alloys containing quasicrystalline particles

Research output: Contribution to conferencePaper

Abstract

High strength Mg-rich Mg-Zn-Y(-Zr) alloys, strengthened by quasicrystalline particles, have been developed by thermomechanical processes. The deformation behaviors of these alloys at room and high temperatures have been investigated and compared to those of commercial alloys AZ31, AZ61 and AZ91. Yield strengths of the Mg-Zn-Y alloys, which increase with an increase in the volume fraction of quasicrystalline phase, are relatively high due to the strengthening effect of quasicrystalline particles. At high temperatures (300 - 425°C), the flow stress levels of the Mg-Zn-Y alloys are lower than those of AZ31, AZ61 and AZ91, while their elongations to failure are larger. Quasicrystalline particles in the Mg-Zn-Y alloys resist coarsening during deformation at temperatures up to the eutectic temperature, leading to a stable distribution of quasicrystalline particles. Stability of both quasicrystalline particles and microstructure of the α-Mg matrix in the Mg-Zn-Y alloys provides large elongation with no void opening at the interface between the quasicrystalline phase and the α-Mg matrix.

Original languageEnglish
Pages141-146
Number of pages6
Publication statusPublished - 2002
EventMagnesium Technology 2002 - Seattle, WA, United States
Duration: 2002 Feb 172002 Feb 21

Other

OtherMagnesium Technology 2002
CountryUnited States
CitySeattle, WA
Period02/2/1702/2/21

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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  • Cite this

    Bae, D. H., & Kim, D. H. (2002). High strength Mg-Zn-Y alloys containing quasicrystalline particles. 141-146. Paper presented at Magnesium Technology 2002, Seattle, WA, United States.