Consolidation of Mechanically Alloyed Cu-Zr-Ti Metallic Glass Powders

Chung Kwei Lin; Pee Yew Lee

doi:10.4028/www.scientific.net/KEM.732.5

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 732Consolidation of Mechanically Alloyed Cu-Zr-Ti...

Consolidation of Mechanically Alloyed Cu-Zr-Ti Metallic Glass Powders

Abstract:

In the present study, Cu₆₀Zr₃₀Ti₁₀ metallic glass powders were prepared by mechanical alloying of pure Cu, Zr, and Ti powder mixtures. Cu₆₀Zr₃₀Ti₁₀metallic glass composite powders were obtained after 5 h of milling as confirmed by X-ray diffraction and transmission electron microscopy. The metallic glass powders were found to exhibit a supercooled liquid region before crystallization. Cu₆₀Zr₃₀Ti₁₀bulk metallic glass were synthesized by vacuum hot pressing the as-milled Cu₆₀Zr₃₀Ti₁₀metallic glass powders at 723 K in the pressure range of 0.72 ~ 1.20 GPa. Cu₆₀Zr₃₀Ti₁₀BMG with nanocrystalline precipitates homogeneously embedded in a highly dense glassy matrix was successfully prepared under applied pressures. It was found that the pressure could enhance the thermal stability and prolong the existence of amorphous phase inside Cu₆₀Zr₃₀Ti₁₀ powders.

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Periodical:

Key Engineering Materials (Volume 732)

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5-10

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.732.5

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Online since:

March 2017

Authors:

Chung Kwei Lin, Pee Yew Lee*

Keywords:

Bulk Metallic Glass, Mechanical Alloying, Pressure-Induced Nanocrystallization, Supercooled Liquid Region, Vacuum Hot Pressing

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