Please use this identifier to cite or link to this item: doi:10.22028/D291-38357
Title: Determining and modelling a complete time-temperature-transformation diagram for a Pt-based metallic glass former through combination of conventional and fast scanning calorimetry
Author(s): Frey, M.
Neuber, N.
Müller, M.
Gross, O.
Riegler, S.S.
Gallino, I.
Busch, R.
Language: English
Title: Scripta Materialia
Volume: 215
Publisher/Platform: Elsevier
Year of Publication: 2022
Free key words: Bulk metallic glass
Undercooling solidification
Surface energy
Nucleation of phase transformations
DDC notations: 500 Science
Publikation type: Journal Article
Abstract: State of the art fast differential scanning calorimetry (FDSC) is used to complement conventional differential scanning calorimetry (DSC) studies about the isothermal time-temperature-transformation (TTT) diagram of the bulk metallic glass forming liquid Pt42.5Cu27Ni9.5P21 to allow a comprehensive study of the crystallization kinetics of this system over a broad temperature range. FDSC and DSC data align well in the low-temperature region of the crystallization nose but show distinct discrepancies in the high-temperature region as the FDSC studies reveal faster crystallization times. The results are mathematically described and discussed based on the Johnson-Mehl-Avrami-Kolmogorov (JMAK) equation. Thereby, either homogeneous or heterogeneous nucleation is assumed, depending on the respective experimental conditions in FDSC and DSC studies. With this approach, the complete TTT diagram can be modelled as superposition of two sequential JMAK fits.
DOI of the first publication: 10.1016/j.scriptamat.2022.114710
URL of the first publication: http://dx.doi.org/10.1016/j.scriptamat.2022.114710
Link to this record: urn:nbn:de:bsz:291--ds-383573
hdl:20.500.11880/34604
http://dx.doi.org/10.22028/D291-38357
ISSN: 1359-6462
Date of registration: 2-Dec-2022
Description of the related object: Supplementary materials
Related object: https://ars.els-cdn.com/content/image/1-s2.0-S135964622200210X-mmc1.docx
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Materialwissenschaft und Werkstofftechnik
Professorship: NT - Prof. Dr. Ralf Busch
NT - Prof. Dr. Frank Mücklich
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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