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MM: Fachverband Metall- und Materialphysik

MM 43: Liquid and Amorphous Metals II - Mechanical properties

MM 43.4: Vortrag

Mittwoch, 2. April 2014, 12:30–12:45, IFW A

Effect of micro-alloying on the properties of Pd- and Zr-based bulk metallic glasses — •Davide Granata, Erwin Fischer, and Jörg F Löffler — ETH Zürich, Zürich, Schweiz

For applications of bulk metallic glasses (BMGs) it is important to design new glass-forming alloys with improved properties. However, good glass-forming ability and improved mechanical properties, such as high fracture toughness and ductility, appear to be mutually exclusive. It has been shown recently that minor additions of suitable elements significantly alter the resulting properties of BMGs. In this micro-alloying approach slight compositional adjustments on the order of 0.1% generate drastic changes in critical casting thickness and mechanical characteristics. In this context we will discuss the role of fluxing-induced micro-alloying in the case of Pd-based BMGs. The knowledge gained will also be transferred to Zr-based BMGs, which are of greater interest for applications.