Study of Glass Forming Ability of Different Bulk Metallic Glass Alloys
Nordin, N.H., Nan, H., Wang, H. et al. (3 more authors)
(2015)
Study of Glass Forming Ability of Different Bulk Metallic Glass Alloys.
In: USES 2015 - The University of Sheffield Engineering Symposium, 24 Jun 2015, The Octagon Centre, University of Sheffield.
Abstract
Zr based, Cu-Zr based and equiatomic TiZrHfNiCu metallic glasses have been prepared by suction casting and characterised by using X-Ray Diffraction and Differential Scanning Calorimetry. Fully glassy rods with wide supercooled liquid region (ΔTx) have been obtained at 3 mm diameter for both Zr based and Cu-Zr based alloys while glassy equiatomic TiZrHfNiCu exhibit low ΔTx at 1.5 mm. The glass forming ability for BMG compositions are analysed and characterised using three parameters: atomic size difference (δ), mixing enthalpy (ΔHmix) and mixing entropy (ΔSmix).
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