Glass forming ability and critical cooling rate for glass formation in bulk glass forming Ca-Mg-Zn alloys

E. S. Park; J. H. Kim; D. H. Kim

Glass forming ability and critical cooling rate for glass formation in bulk glass forming Ca-Mg-Zn alloys

E. S. Park, J. H. Kim, D. H. Kim

Department of Materials Science and Engineering

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

1 Citation (Scopus)

Abstract

A new Ca-Mg-Zn alloy having significantly improved glass forming ability (GFA) has been developed. The ternary Ca₆₅M₁₅Zn ₂₀ bulk metallic glass (BMG) with diameter of at least 15 mm is successfully fabricated by conventional copper mold casting method in air atmosphere. The measured critical cooling rate (R_c) for glass formation in the cone-shaped copper mold is less than 20K/S. The R_c has been calculated from an integrated transformation curve constructed by combining continuous cooling transformation (CCT) and continuous heating transformation (CHT) curves. The calculated R_c is in good agreement with the measured value.

Original language	English
Pages (from-to)	739-743
Number of pages	5
Journal	Transactions of the Indian Institute of Metals
Volume	58
Issue number	4
Publication status	Published - 2005 Aug

All Science Journal Classification (ASJC) codes

Metals and Alloys

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abstract = "A new Ca-Mg-Zn alloy having significantly improved glass forming ability (GFA) has been developed. The ternary Ca65M15Zn 20 bulk metallic glass (BMG) with diameter of at least 15 mm is successfully fabricated by conventional copper mold casting method in air atmosphere. The measured critical cooling rate (Rc) for glass formation in the cone-shaped copper mold is less than 20K/S. The Rc has been calculated from an integrated transformation curve constructed by combining continuous cooling transformation (CCT) and continuous heating transformation (CHT) curves. The calculated Rc is in good agreement with the measured value.",

author = "Park, {E. S.} and Kim, {J. H.} and Kim, {D. H.}",

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N2 - A new Ca-Mg-Zn alloy having significantly improved glass forming ability (GFA) has been developed. The ternary Ca65M15Zn 20 bulk metallic glass (BMG) with diameter of at least 15 mm is successfully fabricated by conventional copper mold casting method in air atmosphere. The measured critical cooling rate (Rc) for glass formation in the cone-shaped copper mold is less than 20K/S. The Rc has been calculated from an integrated transformation curve constructed by combining continuous cooling transformation (CCT) and continuous heating transformation (CHT) curves. The calculated Rc is in good agreement with the measured value.

AB - A new Ca-Mg-Zn alloy having significantly improved glass forming ability (GFA) has been developed. The ternary Ca65M15Zn 20 bulk metallic glass (BMG) with diameter of at least 15 mm is successfully fabricated by conventional copper mold casting method in air atmosphere. The measured critical cooling rate (Rc) for glass formation in the cone-shaped copper mold is less than 20K/S. The Rc has been calculated from an integrated transformation curve constructed by combining continuous cooling transformation (CCT) and continuous heating transformation (CHT) curves. The calculated Rc is in good agreement with the measured value.

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