Dresden 2020 – scientific programme
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MM: Fachverband Metall- und Materialphysik
MM 5: Liquid and Amorphous Metals - Kinetics and Modelling
MM 5.3: Talk
Monday, March 16, 2020, 10:45–11:00, IFW D
Predicting the glass formation behavior of multi-principal element alloys — •Mirko Gabski, Martin Peterlechner, and Gerhard Wilde — Institut für Materialphysik, Westfälische Wilhelms-Universität Münster
In contrast to conventional alloys, multi-principal element alloys consist of several constituents in similarly high concentrations. Examples for such alloys range from solid-solution high entropy alloys, like the Cantor alloy Co20Cr20Fe20Mn20Ni20, to metallic glasses like Pd40Ni40P20 or the commercially used Vitreloy Zr40Be22.5Ti13.8Cu12.5Ni10. Both are of interest for research and commercial applications due to their favorable mechanical and chemical properties. Guo et al. showed that there is a correlation between the values of a set of thermodynamic and structural parameters of an alloy and the phases it forms[1]. In the present work this correlation is used to predict the glass formation behavior of multi-principal element alloys by calculating the relevant parameter set. The parameters are evaluated and the deduced critical cooling rate is compared to literature values on well-known glass formers.
[1] Guo, S. and C.T. Liu, Progress in Natural Science: Materials International, 2011. 21(6): p. 433-446.