Journal
ACTA MATERIALIA
Volume 52, Issue 8, Pages 2441-2448Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2004.01.036
Keywords
metallic glasses; decomposition; composites; small angle x-ray scattering; HREM
Ask authors/readers for more resources
The alloy La(27.5)ZR(27.5)Al(25)Cu(10)Ni(10) was found to phase separate during quenching from the melt into (La-Cu)-rich and (Zr-Ni)rich glassy phases with compositions close to those of Zr-Ni-Al and La-Cu-Al bulk metallic glasses. As-quenched samples consist of two amorphous phases in spherical shape with a wide range of length scales from tens of micrometers to a few nanometers. Several self-similar generations of spheres in spheres were observed using scanning electron microscopy and transmission electron microscopy. Small angle X-ray scattering results show an exponential dependence to the power of -3.4 of the intensity on the scattering vector, indicating a surface fractal microstructure of dimension 2.6. The selected area diffraction patterns obtained from two-phase regions show, two clearly distinguishable halo rings and the high resolution electron microscope image shows isotropic maze patterns with two different length scales corresponding to the difference in the average atomic distance of the two amorphous phases. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available