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Composition dependency of the glass forming ability (GFA) in Mg—Ni—Si system by mechanical alloying
journal contribution
posted on 2007-06-01, 00:00 authored by Haowen Xie, J Lin, Yuncang Li, Peter HodgsonPeter Hodgson, Cui'E WenThe 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.
History
Journal
Materials science and engineering A: Structural materials: properties, microstructures and processingVolume
459Issue
1-2Pagination
35 - 39Publisher
Elsevier SALocation
Lausanne, SwitzerlandPublisher DOI
ISSN
0921-5093eISSN
1873-4936Language
engNotes
Available online 20 December 2006.Publication classification
C1 Refereed article in a scholarly journalCopyright notice
2006 Elsevier B.V.Usage metrics
Keywords
amorphous alloyglass forming abilitymechanical alloyingformation enthalpyScience & TechnologyTechnologyNanoscience & NanotechnologyMaterials Science, MultidisciplinaryMetallurgy & Metallurgical EngineeringScience & Technology - Other TopicsMaterials ScienceBULK METALLIC GLASSESPHYSICAL-PROPERTIESCRITERIONCURANGEMechanical Engineering
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