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MM: Fachverband Metall- und Materialphysik
MM 22: Liquid and Amorphous Metals - Metallic Glass
MM 22.5: Vortrag
Dienstag, 17. März 2020, 11:15–11:30, IFW D
Effect of Gd micro-alloying on thermodynamic, kinetic and mechanical properties of a Pd40Ni40P20 bulk metallic glass — •Saba Khademorezaian1, Martin Peterlechner1, Marilena Tomut2, and Gerhard Wilde1 — 1Westfälliche Wilhelms-Universität Münster, Münster, Germany — 2GSI Helmholtzzentrum für schwerionenforschung, Darmstadt, Germany
In the field of bulk metallic glasses, minor additions have proven to be a powerful tool to enhance different properties, among which glass forming ability, thermal stability and plasticity are forming the focus of this report.
We have studied the impact of adding 1 at% Gd to a reference Pd40Ni40P20 bulk metallic glass on glass forming ability, crystallization kinetics and also fictive glass transition temperature. [1] As Nollmann et al. [2] shown, minor addition of different elements can have a positive or negative impact on the mechanical properties of metallic glasses. The impact of the Gd addition on the glass forming ability was performed by calorimetric analyses and mechanical properties were investigated by compression test as well as by micro- and nano-indentation. Studying the changes in glass plasticity caused by different alloying additions can also provide better knowledge of deformation mechanism, shear band formation and propagation. [3]
[1] Y.P.Mitrofanov et al, Acta Materialia 90 (2015) 318-329 [2] N. Nollmann et al., Scripta Materialia 111 (2016), 119-122 [3] I. Binkowski et al, Acta Materialia 109 (2016) 330-340.