In situ formation of two amorphous phases by liquid phase separation in Y-Ti-Al-Co alloy

B. J. Park; H. J. Chang; D. H. Kim; W. T. Kim

doi:10.1063/1.1842360

In situ formation of two amorphous phases by liquid phase separation in Y-Ti-Al-Co alloy

B. J. Park, H. J. Chang, D. H. Kim, W. T. Kim

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

143 Citations (Scopus)

Abstract

The Y28 Ti28 Al24 Co20 alloy undergoes metastable liquid phase separation in the under-cooled liquid state and subsequently solidifies into two different Y-rich and Ti-rich amorphous phases. Secondary phase separation occurs due to the supersaturation of the primary separated liquids as the temperature decreases. Depending on the degree of local undercooling, a wide range of length scale of the microstructure is observed. The characteristic length scale of the two amorphous phases is ~250 nm near the air side of the ribbon, and ~25 nm near the wheel side of the ribbon.

Original language	English
Pages (from-to)	6353-6355
Number of pages	3
Journal	Applied Physics Letters
Volume	85
Issue number	26
DOIs	https://doi.org/10.1063/1.1842360
Publication status	Published - 2004 Dec 27

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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abstract = "The Y28 Ti28 Al24 Co20 alloy undergoes metastable liquid phase separation in the under-cooled liquid state and subsequently solidifies into two different Y-rich and Ti-rich amorphous phases. Secondary phase separation occurs due to the supersaturation of the primary separated liquids as the temperature decreases. Depending on the degree of local undercooling, a wide range of length scale of the microstructure is observed. The characteristic length scale of the two amorphous phases is ~250 nm near the air side of the ribbon, and ~25 nm near the wheel side of the ribbon.",

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AU - Kim, D. H.

AU - Kim, W. T.

PY - 2004/12/27

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N2 - The Y28 Ti28 Al24 Co20 alloy undergoes metastable liquid phase separation in the under-cooled liquid state and subsequently solidifies into two different Y-rich and Ti-rich amorphous phases. Secondary phase separation occurs due to the supersaturation of the primary separated liquids as the temperature decreases. Depending on the degree of local undercooling, a wide range of length scale of the microstructure is observed. The characteristic length scale of the two amorphous phases is ~250 nm near the air side of the ribbon, and ~25 nm near the wheel side of the ribbon.

AB - The Y28 Ti28 Al24 Co20 alloy undergoes metastable liquid phase separation in the under-cooled liquid state and subsequently solidifies into two different Y-rich and Ti-rich amorphous phases. Secondary phase separation occurs due to the supersaturation of the primary separated liquids as the temperature decreases. Depending on the degree of local undercooling, a wide range of length scale of the microstructure is observed. The characteristic length scale of the two amorphous phases is ~250 nm near the air side of the ribbon, and ~25 nm near the wheel side of the ribbon.

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