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Composition dependency of the glass forming ability (GFA) in Mg—Ni—Si system by mechanical alloying

Xie, Haowen, Lin, Jianguo, Li, Yuncang, Hodgson, Peter and Wen, Cui`e 2007, Composition dependency of the glass forming ability (GFA) in Mg—Ni—Si system by mechanical alloying, Materials science and engineering A: Structural materials: properties, microstructures and processing, vol. 459, no. 1-2, pp. 35-39.


Title Composition dependency of the glass forming ability (GFA) in Mg—Ni—Si system by mechanical alloying
Author(s) Xie, Haowen
Lin, Jianguo
Li, Yuncang
Hodgson, Peter
Wen, Cui`e
Journal name Materials science and engineering A: Structural materials: properties, microstructures and processing
Volume number 459
Issue number 1-2
Start page 35
End page 39
Publisher Elsevier SA
Place of publication Lausanne, Switzerland
Publication date 2007-06
ISSN 0921-5093
Keyword(s) amorphous alloy
glass forming ability
mechanical alloying
formation enthalpy
Summary The pure elemental powder mixtures with the compositions of Mg65NixSi35−x (x = 10, 20, 25, 33 at.%) were subject to high-energy ball mill, and the structures of the mixtures at different intervals of milling were characterised by X-ray diffraction (XRD). The compositional dependency of the glass forming ability (GFA) in Mg–Ni–Si system was evaluated based on the experimental results and the theoretical calculation. The compositional dependency of GFA in Mg–Ni–Si system can be understood well by comparing the enthalpies of the crystalline and amorphous phases based on the Miedema's theory for the formation enthalpy of alloys. Increasing the Ni/Mg ratio and/or decreasing Si content can improve the amorphous formability. The calculation results might be of great help in optimising the composition with high GFA in Mg–Ni–Si system.
Notes Available online 20 December 2006.
Language eng
Field of Research 091207 Metals and Alloy Materials
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2006 Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30007150

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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