TITLE

Evidence of polymorphous amorphous-to-quasicrystalline phase transformation in Zr[sub 66.7]Pd[sub 33.3] metallic glass

AUTHOR(S)
Jiang, J. Z.; Saksl, K.; Saida, J.; Inoue, A.; Franz, H.; Messel, K.; Lathe, C.
PUB. DATE
February 2002
SOURCE
Applied Physics Letters;2/4/2002, Vol. 80 Issue 5, p781
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The amorphous-to-quasicrystalline phase transformation and the pressure effect on the transformation in a Zr[sub 66.7]Pd[sub 33.3] metallic glass have been investigated by in situ x-ray diffraction measurements using synchrotron radiation. It is found that the transformation is a polymorphous reaction and external pressure enhances the onset temperature for the formation of quasicrystals with a rate of 22 K/GPa while the temperature interval for the stability of quasicrystals remains almost unchanged in the pressure range of 0–4 GPa. The enhancement of the onset temperature for the formation of quasicrystals has been further discussed with the nucleation theory. © 2002 American Institute of Physics.
ACCESSION #
5985802

 

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