J Mater Sci Technol ›› 1994, Vol. 10 ›› Issue (4): 304-306.

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Quasicrystalline Phase in As-cast Mg-Zn-Y-Zr Alloy

Yali TANG; Ningfu SHEN and Xin YUAN (Research Center for Materials, Zhengzhou Institute of Technology, Zhengzhou, 450002, China)Zhiping LUO and Shaoqing ZHANG (Institute of Aeronautical Materials, Beijing,100095, China)(To whom correspondence should be ad   

  • Received:1994-07-28 Revised:1994-07-28 Online:1994-07-28 Published:2009-10-10

Abstract: An icosahedral phase in as-cast Mg 5. 78Zn-0.89Y-0.48Zr (wt-%) alloy has been identified with transmission electron microscope (TPM) The selected area diffraction patterns (SADP) from the phase show a five-fold symmetry of a quasicrystalline structure. The energy dispersive X-ray spectra (EDXS) indicate that the quaternary phase has a chemical composition of 67.6Zn-1 9.4Mg-8,1 Y-4 9Zr in at -%