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Investigation of glass forming ability in the Zr-rich part of the Zr-Fe-Al ternary system
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.ORCID iD: 0000-0002-8493-9802
2019 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 125, no 6, article id 065101Article in journal (Refereed) Published
Abstract [en]

In the present study, the CALPHAD (CALculation of PHAse Diagrams) methodology and thermodynamic data were used to calculate the equilibrium phase diagram of the Zr-Fe-Al system. Furthermore, the information for the enthalpy of mixing (ΔH mix ) and the atomic radius of the constituent elements, in terms of the generalized topological instability factor (λ), were combined with the ternary phase diagram to predict compositions with high Glass Forming Ability (GFA). Compositions with a Zr content ranging from 67 to 73 at. % were proposed and later produced by rapid cooling using suction casting. The obtained results revealed that 12 out of the initial 14 compositions were successfully made into glassy structures with a critical diameter ranging from 0.5 to 2.5 mm. The achieved results show good agreement between the predictions made and the experimental results, and the corresponding λ value obtained for the highest GFA was used to identify the optimum area of interest for producing Zr-Fe-Al metallic glasses. It is believed that the proposed computational approach can be used as a guideline to predict glass forming areas/compositions in even other systems.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2019. Vol. 125, no 6, article id 065101
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-244326DOI: 10.1063/1.5066554ISI: 000458877500026Scopus ID: 2-s2.0-85061368608OAI: oai:DiVA.org:kth-244326DiVA, id: diva2:1290397
Note

QC 20190220

Available from: 2019-02-20 Created: 2019-02-20 Last updated: 2019-03-18Bibliographically approved

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Mao, Huahai

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