Abstract
In the present study, we report a Ca-Mg-Ni alloy exhibiting significantly improved glass-forming ability (GFA). The Ca60 Mg25 Ni15 bulk metallic glass (BMG) with a diameter of 13 mm is successfully fabricated by a conventional copper mold casting method in air atmosphere. The Δ Tx, Trg, K, and γ parameters exhibit very poor correlation with the GFA. However, the γ parameter exhibits a far better correlation with GFA, indicating that the liquid phase stability and atomic size mismatch dominantly affect the GFA of Ca-based ternary BMGs. The GFA of alkaline-earth-metal-based ternary BMGs such as Ca- and Mg-based BMGs cannot be described properly only by considering thermodynamic and/or kinetic criterion (Δ Tx, Trg, K, and γ parameters), but can well be described by considering atomic configuration criterion as well as thermodynamic criterion (γ parameter).
Original language | English |
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Article number | 201912 |
Pages (from-to) | 1-3 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 86 |
Issue number | 20 |
DOIs | |
Publication status | Published - 2005 May 16 |
Bibliographical note
Funding Information:This work was supported by the Creative Research Initiatives of the Korean Ministry of Science and Technology.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)