Regensburg 2019 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 14: Topical session (Symposium MM): High entropy and compositionally complex alloys

MM 14.3: Vortrag

Dienstag, 2. April 2019, 11:00–11:15, H43

Strengthening in solid solutions of the system Au-Cu-Ni-Pd-Pt — •Felix Thiel^1,2, Christina Bollnow^1,2, Jens Freudenberger^{1, 3}, David Geißler¹, Alexander Kauffmann⁴, Hans Chen⁴, Martin Heilmaier⁴, and Kornelius Nielsch^1,2 — ¹IFW Dresden, Helmholtzstr. 20, 01069 Dresden — ²TU Dresden, Institut für Werkstoffwissenschaft, Helmholtzstr. 7, 01069 Dresden — ³TU Bergakademie Freiberg, Institut für Werkstoffwissenschaft, Gustav-Zeuner-Str. 5, 09599 Freiberg — ⁴KIT, Institut für Angewandte Materialien - Werkstoffkunde, Engelbert-Arnold-Str. 4, 76131 Karlsruhe

High Entropy Alloys (HEAs) show outstanding mechanical and physical properties, which would not have been expected upon their simple crystal structure and the fact that they are single phased. The Au-Cu-Ni-Pd-Pt system and their including subsystems show crystallization into the same Cu-type crystal structure within the whole concentration range. Therefore,this system is unique and particularly suitable to study the alloying effect on the properties within a large concentration range without the necessity of considering other phases. The present study shows the effect of alloying a multi-component solid solution on the properties of medium and high entropy alloys in this system. In particular, effects such as solid solution hardening and work hardening are assessed.