Atomic packing density and its influence on the properties of Cu–Zr amorphous alloys

This study examined the structural factors that determine the properties of amorphous alloys. The properties of amorphous alloys were found to be intimately related to the atomic packing density, characterized by short-range ordered (SRO) atomic clusters and free volume. With increasing packing dens...

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Bibliographic Details
Published in:Scripta materialia 2007-11, Vol.57 (9), p.805-808
Main Authors: Park, Kyoung-Won, Jang, Jae-il, Wakeda, Masato, Shibutani, Yoji, Lee, Jae-Chul
Format: Article
Language:English
Subjects:
Amorphous alloy
Amorphous alloys
AMORPHOUS STRUCTURE
Atomic clusters
Atomic packing density
COPPER ALLOYS (40 TO 99.3 CU)
Copper base alloys
DENSITY
Free volume
Metallic glasses
Microstructure
MICROSTRUCTURES
Packing density
PLASTICITY
Properties
Short range order
Short-range ordering
ZIRCONIUM COPPERS
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Summary:This study examined the structural factors that determine the properties of amorphous alloys. The properties of amorphous alloys were found to be intimately related to the atomic packing density, characterized by short-range ordered (SRO) atomic clusters and free volume. With increasing packing density, the modulus and strength increased, while the plasticity decreased. We discuss the fundamental microstructural aspects that influence several representative properties of amorphous alloys in terms of the packing state characterized by fractions of SRO atomic clusters.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2007.07.019