The Open Materials Science Journal
2011, 5 : 100-103Published online 2011 May 2. DOI: 10.2174/1874088X01105010100
Publisher ID: TOMSJ-5-100
Nano-Al Formed by Phase Separation in the Al85Ni10Ce5 Metallic Glass
Hebei University of Engineering, Handan 056038, China.
ABSTRACT
A nucleation-growth control for Al85Ni10Ce5 glass has transformed to a growth control for Al83Ni10Ce5Si2 glass. That’s to say a small quantity of Si addition can successfully separate the Al phase to single precipitate from a eutectic precipitation composited of Al and other intermetallic compound to synthesize nanostructured materials, characteristic of microstructures with finely dispersed nanoccrystalline Al in an amorphous matrix. Favorably no evident decrease of glass forming ability is observed in the transformation. We suggest that the Si atoms solve into Al lattice to sever as preexist nucleus for fcc-Al, in the same time; a nucleation reaction of fcc-Al is accompanied to compensate the nucleation rate.