|About this Abstract
||1st World Congress on High Entropy Alloys (HEA 2019)
||High Entropy Alloys 2019
||Discovery and Optimization of High Entropy Alloys Using Combinatorial and High-throughput Methods
||A. Savan, Y. J. Li, T. Löffler, A. Garzón Manjón, M. Meischein, L. Banko, A. Kostka, J. Pfetzing-Micklich, S. Thienhaus, C. Scheu, W. Schuhmann, Alfred Ludwig
|On-Site Speaker (Planned)
The challenge to discover, investigate and optimize new high entropy alloys (HEA) with interesting properties out of their almost unlimited multinary element composition space is addressed by combinatorial fabrication of materials libraries, their high-throughput characterization, and materials informatics for multidimensional data analysis. Thin film HEA libraries are fabricated by co-deposition from five magnetron sputter sources. Resulting composition spreads comprise significant fractions of all possible quinary compositions of the respective system. By using high-throughput x-ray diffraction, the compositional limits of the solid solution existence range and multiphase regions are identified. Functional properties are mapped by high-throughput characterization tools. Furthermore, single-phase HEA may decompose into multiple phases at elevated temperatures or reactive environments: We present an accelerated methodology to investigate HEA phase stability using a combinatorial processing platform and atom probe tomography. By using combinatorial sputtering into ionic liquids nanoparticle libraries are fabricated and we recently discovered excellent electrocatalytic properties of HEA nanoparticles.