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Devitrification of nano-scale icosahedral phase in (Ti0.33Zr0.33Hf0.33)50(Ni0.5Cu0.5)40Al10 alloy with enlarging supercooled liquid region

Kim, Ki Buem (2005) Devitrification of nano-scale icosahedral phase in (Ti0.33Zr0.33Hf0.33)50(Ni0.5Cu0.5)40Al10 alloy with enlarging supercooled liquid region. Materials Letters, 59 (14-15). 1771 - 1774.

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Official URL: http://www.sciencedirect.com/science/article/B6TX9...

Abstract

This letter reports devitrification of novel multicomponent (Ti0.33Zr0.33Hf0.33)50(Ni0.5Cu0.5)40Al10 alloy, developed by equiatomic substitution. The supercooled liquid region of the (Ti0.33Zr0.33Hf0.33)50(Ni0.5Cu0.5)40Al10 alloy increased with progress of the first exothermic reaction. The supercooled liquid region of 57 K in the as-quenched state was observed to increase to 108 K after heat treatment for 180 min at 743 K. The corresponding microstructure after heat treatment for 180 min at 743 K consisted of a homogeneous distribution of the nano-scale icosahedral phase embedded in the remaining amorphous matrix. Therefore, it is feasible to understand that the devitrification of the nano-scale icosahedral phase occurs in the (Ti0.33Zr0.33Hf0.33)50(Ni0.5Cu0.5)40Al10 alloy by the primary crystallization.

Item Type:Article
Uncontrolled Keywords:Metals and alloys; Amorphous; Equiatomic substitution; Devitrification; Icosahedral phase
Subjects:Material Science > Nanofabrication processes and tools
Material Science > Nanochemistry
Material Science > Nanostructured materials
ID Code:6855
Deposited By:SPI
Deposited On:30 Sep 2009 16:57
Last Modified:30 Sep 2009 16:57

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