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Formation of Ca–Mg–Zn bulk glassy alloy by casting into cone-shaped copper mold

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Abstract

A new Ca–Mg–Zn alloys having significantly improved glass-forming ability (GFA) has been developed. The ternary Ca65Mg15Zn20 bulk metallic glass with diameter of at least 15 mm is successfully fabricated by conventional copper-mold casting method in air atmosphere. The critical cooling rate for glass formation in the cone-shaped copper mold is less than 20 K/s. When compared with the GFA of Ca–Mg–M (M: Cu, Ni, and Ag) alloys, the significantly improved GFA of the Ca–Mg–Zn alloy cannot be represented by ΔTx, Trg, K, and γ parameters.

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Authors and Affiliations

  1. Center for Non-crystalline Materials, Department of Metallurgical Engineering, Yonsei University, Seoul, 120-749, Korea

    E. S. Park & D. H. Kim

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  1. E. S. Park
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  2. D. H. Kim
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Correspondence to D. H. Kim.

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Park, E.S., Kim, D.H. Formation of Ca–Mg–Zn bulk glassy alloy by casting into cone-shaped copper mold. Journal of Materials Research 19, 685–688 (2004). https://doi.org/10.1557/jmr.2004.19.3.685

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  • DOI: https://doi.org/10.1557/jmr.2004.19.3.685

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