Characterization of Multiscale Interfaces of Hierarchical High-Entropy Alloys by Advanced Microscopy and Microanalysis

ended

The aim of the fellowship is to establish methodology for characterisation of a new class of technologically important hierarchical materials with functional multiscale interfaces designed to control their mechanical and thermal stability. The research will rely on a comprehensive study of novel biomimetic multielement high-entropy alloys produced with unique microstructures by bottom-up approaches, allowing for (i) understanding the process-structure-property relations of advanced hierarchical alloys for challenging safety-critical applications, (ii) identifying the role of multiscale interfaces in structurally complex materials on their mechanical and thermal stability, which will subsequently allow for (iii) designing new perspective materials possibly solving the strength-toughness trade-off dilemma limiting the replacement of traditional materials by more perspective materials. The fellowship is also aiming to fill the gap in the knowledge in the beneficiary on in-depth structural characterization of hierarchical materials with multiscale interfaces by advanced characterisation techniques. This will be achieved by (i) in-depth hands-on training on electron microscopy and atom probe tomography in the host institution focused on characterization of structural features spanning multiple length-scales, (ii) transfer of the knowledge to the beneficiary, (iii) establishing an internationally recognized research group in the beneficiary with a focus on the synthesis, in-depth structural and mechanical characterization of novel hierarchical biomimetic mechanically and thermally stable materials for safety-critical applications and (iv) strengthening the collaboration with the host institution. The scientific work is expected to have a strong impact on a variety of multidiscipline applications, in which microstructural design plays an important role in controlling the material properties, especially during research following the incoming phase of the fellowship.