TITLE

Bulk nanostructure formation directly from the multicomponent alloy melt

AUTHOR(S)
Jian-Min Li, H.
PUB. DATE
January 2004
SOURCE
Applied Physics Letters;1/19/2004, Vol. 84 Issue 3, p347
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The first bulk homogeneous nanocrystalline Zr[sub 60]Al[sub 15]Ni[sub 10]Co[sub 15] (at. %) alloy prepared by melt casting without the amorphous matrix is reported. In this work, the complete grain refinement directly by solidification processing, when qualitatively compared to the previously reported nanocrystallization by postdevitrification of amorphous alloy solid precursors, produces nanograins that have a relatively narrower size range (7.4 nm in average) and are randomly oriented. The total inhomogeneous chemical affinity of the multicomponent alloy was proposed to thermodynamically favor the three-dimensional nanoscale nucleation from alloy melts. Clustering of different atoms in the ZrAlNiCo alloy occurs while the material is still in the molten state. © 2004 American Institute of Physics.
ACCESSION #
11941952

 

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