Ca-Mg-Zn bulk metallic glasses with strong glassforming ability synthesized under air atmosphere

E. S. Park; D. H. Kim

doi:10.4028/www.scientific.net/JMNM.24-25.687

Ca-Mg-Zn bulk metallic glasses with strong glassforming ability synthesized under air atmosphere

E. S. Park, D. H. Kim

Department of Materials Science and Engineering

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

Abstract

The effect of alloy composition on the glass forming ability (GFA) of the Ca-rich Ca-Mg-Zn alloys has been investigated. In a wide composition range of 10 % - 30 % Zn and 5 % - 25 % Mg bulk metallic glass (BMG) samples with the diameter larger than 1 mm are fabricated by conventional copper mold casting method and injection casting method in air atmosphere. Among the alloys investigated, the Ca₆₅Mg₁₅Zn₂₀ alloy exhibits the highest GFA enabling to form BMG sample with the diameter of at least 15 mm. The σ parameter has better correlation with D_max in the Ca-Mg-Zn alloys than previously suggested parameters such as ΔT _X, T_rg, K and γ parameters.

Original language	English
Pages (from-to)	687-690
Number of pages	4
Journal	Journal of Metastable and Nanocrystalline Materials
Volume	24-25
DOIs	https://doi.org/10.4028/www.scientific.net/JMNM.24-25.687
Publication status	Published - 2005

All Science Journal Classification (ASJC) codes

Materials Science (miscellaneous)
Materials Science(all)
Condensed Matter Physics
Physical and Theoretical Chemistry

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10.4028/www.scientific.net/JMNM.24-25.687

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abstract = "The effect of alloy composition on the glass forming ability (GFA) of the Ca-rich Ca-Mg-Zn alloys has been investigated. In a wide composition range of 10 % - 30 % Zn and 5 % - 25 % Mg bulk metallic glass (BMG) samples with the diameter larger than 1 mm are fabricated by conventional copper mold casting method and injection casting method in air atmosphere. Among the alloys investigated, the Ca65Mg15Zn20 alloy exhibits the highest GFA enabling to form BMG sample with the diameter of at least 15 mm. The σ parameter has better correlation with Dmax in the Ca-Mg-Zn alloys than previously suggested parameters such as ΔT X, Trg, K and γ parameters.",

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AB - The effect of alloy composition on the glass forming ability (GFA) of the Ca-rich Ca-Mg-Zn alloys has been investigated. In a wide composition range of 10 % - 30 % Zn and 5 % - 25 % Mg bulk metallic glass (BMG) samples with the diameter larger than 1 mm are fabricated by conventional copper mold casting method and injection casting method in air atmosphere. Among the alloys investigated, the Ca65Mg15Zn20 alloy exhibits the highest GFA enabling to form BMG sample with the diameter of at least 15 mm. The σ parameter has better correlation with Dmax in the Ca-Mg-Zn alloys than previously suggested parameters such as ΔT X, Trg, K and γ parameters.

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Ca-Mg-Zn bulk metallic glasses with strong glassforming ability synthesized under air atmosphere

Abstract

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