About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Bulk Metallic Glasses XX
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Presentation Title |
Thermodynamic Analysis and Modeling of Novel Ternary Ni-Pd-S Bulk Metallic Glass-forming System |
Author(s) |
Maryam Rahimi Chegeni, Wenhao Ma, Sascha Sebastian Riegler, Magnus Rohde, Amirhossein Ghavimi, Hans Jürgen Seifert, Isabella Gallino, Ralf Busch |
On-Site Speaker (Planned) |
Maryam Rahimi Chegeni |
Abstract Scope |
In this work, an experimental and computational investigation into the thermo-physical properties of the novel ternary BMG-forming Ni-Pd-S system is carried out. The simplicity of the ternary Ni-Pd-S BMG-forming system in comparison to the commonly found quinary BMG-formers facilitates the application of the CALPHAD approach for the modeling of the underlying thermodynamics ruling the glass formation and the description of the thermodynamic functions of the amorphous phases.
Extensive experimental quantitative specific heat capacity and crystallization studies (DSC, XRD and SEM) of various glass-forming compositions are performed to generate input data for the calculations and modeling of the undercooled liquid.
Isothermal crystallization is experimentally studied to provide partial or complete TTT diagrams for different glass-forming compositions. Based on the viscosity data of the liquid phase and CALPHAD calculations of the driving force for crystallization, the interfacial energies between the liquid and the solid are estimated and compared to the existing models. |
Proceedings Inclusion? |
Planned: |