Journal article
Computational thermodynamics to identify Zr–Ti–Ni–Cu–Al alloys with high glass-forming ability
Acta materialia, Vol.54(11), pp.2975-2982
2006
Handle:
https://hdl.handle.net/2376/115835
Abstract
We have used a thermodynamic computational approach to identify the compositions of Zr–Ti–Ni–Cu–Al alloys exhibiting low-lying liquidus surfaces, which tend to favor the formation of bulk metallic glasses. Guided by these calculations, we have identified several series of new Zr-based alloys with excellent glass formability, some of which can be cast into glassy rods up to 14
mm in diameter. These alloys exhibit wide undercooled liquid regions (
T
x
−
T
g) up to 85
K and high Vickers hardness from 550 to 700
kg/mm
2. The best glass-forming alloy is Zr
51Ti
5Ni
10Cu
25Al
9. The computational thermodynamic approach coupled with the reduced glass transition temperature criterion of Turnbull can rapidly identify regions of alloy composition suitable for experimental tests for glass formation. The glass-forming ability of the alloys we studied can be understood in terms of the relative liquidus temperature in a thermodynamically calculated temperature vs. composition section through a multicomponent phase diagram. It does not follow several other proposed thermodynamic or topological criteria. Our general approach may be extended into a universal tool to identify alloys with good potential to form bulk glasses.
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Details
- Title
- Computational thermodynamics to identify Zr–Ti–Ni–Cu–Al alloys with high glass-forming ability
- Creators
- Hongbo Cao - Department of Materials Science and Engineering, University of Wisconsin–Madison, 1509 University Avenue, Madison, WI 53706, USADong Ma - Department of Materials Science and Engineering, University of Wisconsin–Madison, 1509 University Avenue, Madison, WI 53706, USAKer-Chang Hsieh - Institute of Materials Science and Engineering, Sun Yat Sen University, Kaohsiung 80424, TaiwanLing Ding - University of Wisconsin–MadisonWilliam G Stratton - Department of Materials Science and Engineering, University of Wisconsin–Madison, 1509 University Avenue, Madison, WI 53706, USAPaul M Voyles - Department of Materials Science and Engineering, University of Wisconsin–Madison, 1509 University Avenue, Madison, WI 53706, USAYe Pan - Department of Materials Science and Engineering, Southeast University, Nanjing 210096, ChinaMingdong Cai - Department of Physics and Astronomy, Washington State University, Pullman, WA 99164-2814, USAJ. Thomas Dickinson - Department of Physics and Astronomy, Washington State University, Pullman, WA 99164-2814, USAY. Austin Chang - Department of Materials Science and Engineering, University of Wisconsin–Madison, 1509 University Avenue, Madison, WI 53706, USA
- Publication Details
- Acta materialia, Vol.54(11), pp.2975-2982
- Academic Unit
- Department of Physics and Astronomy
- Publisher
- Elsevier Ltd
- Identifiers
- 99900547512801842
- Language
- English
- Resource Type
- Journal article