Stein, F.; Philips, N.: High-Temperature Phase Equilibria and Solidification Behaviour of Nb-rich Nb–Al–Fe Alloys. TOFA 2016, Discussion Meeting on Thermodynamics of Alloys, Santos, Brazil (2016)
Luo, W.; Kirchlechner, C.; Dehm, G.; Stein, F.: A New Method to Study the Composition Dependence of Mechanical Properties of Laves. MRS Fall Meeting 2016, Boston, MA, USA (2016)
Šlapáková, M.; Liebscher, C.; Kumar, S.; Stein, F.: Deformation Mechanism of Single Phase C14 Laves Phase NbFe2 Studied by TEM. MRS Fall Meeting 2016, Boston, MA, USA (2016)
Stein, F.; Horiuchi, T.: Discontinuous Precipitation of the Complex Intermetallic Phase Nb2Co7 from Supersaturated Co Solid Solution. Thermec 2016, Graz, Austria (2016)
Stein, F.; Luo, W.; Li, X.; Palm, M.: Diffusion couples as a "new" method for material synthesis. 61. Metallkunde-Kolloquium - Werkstoffforschung für Wirtschaft und Gesellschaft, Lech am Arlberg, Austria (2015)
Li, X.; Scherf, A.; Heilmaier, M.; Stein, F.: Coarsening Kinetics of Lamellar FeAl + FeAl2 Microstructures in Al-rich Fe–Al Alloys. Intermetallics 2015, Educational Center Kloster Banz, Bad Staffelstein, Germany (2015)
Li, X.; Scherf, A.; Janda, D.; Heilmaier, M.; Stein, F.: Two-Phase Binary Fe–Al Alloys with Fine-Scaled Lamellar Microstructure and the Effect of Ternary Additions on Microstructure, Stability, and Mechanical Behavior. 123HiMAT-2015, Advanced High-Temperature Materials Technology for Sustainable and Reliable Power Engineering, Sapporo, Japan (2015)
Scherf, A.; Li, X.; Stein, F.; Heilmaier, M.: Creep Properties and Microstructure of Binary Fe–Al Alloys with a Fine-Scaled, Lamellar Microstructure. Intermetallics 2015, Educational Center Kloster Banz, Bad Staffelstein, Germany (2015)
Scherf, A.; Li, X.; Stein, F.; Heilmaier, M.: Creep Properties and Microstructure of Binary Fe-Al Alloys with a Fine-Scaled, Lamellar Microstructure. Creep 2015, 13th International Conference on Creep and Fracture of Engineering Materials and Structures, Toulouse, France (2015)
Stein, F.: Phase Diagrams and Phase Transformations. Intermetallics 2015 Conference, School on Thermodynamics of Intermetallics, Educational Center Kloster Banz, Staffelstein, Germany (2015)
Li, X.; Stein, F.; Scherf, A.; Janda, D.; Heilmaier, M.: Investigation of Fe–Al Based in situ Composites with Fine Lamellar Eutectoid Microstructure. MRS Fall Meeting 2014
, Boston, MA, USA (2014)
Stein, F.; He, C.: The Usefulness and Applicability of the Alkemade Theorem for the Determination of Ternary Phase Diagrams with Intermetallic Phases. TOFA 2014 – 14th Discussion Meeting on Thermodynamics of Alloys, Brno, Czech Republic (2014)
The wide tunability of the fundamental electronic bandgap by size control is a key attribute of semiconductor nanocrystals, enabling applications spanning from biomedical imaging to optoelectronic devices. At finite temperature, exciton-phonon interactions are shown to exhibit a strong impact on this fundamental property.
Oxides find broad applications as catalysts or in electronic components, however are generally brittle materials where dislocations are difficult to activate in the covalent rigid lattice. Here, the link between plasticity and fracture is critical for wide-scale application of functional oxide materials.
In this project we study - together with the department of Prof. Neugebauer and Dr. Sandlöbes at RWTH Aachen - the underlying mechanisms that are responsible for the improved room-temperature ductility in Mg–Y alloys compared to pure Mg.
Enabling a ‘hydrogen economy’ requires developing fuel cells satisfying economic constraints, reasonable operating costs and long-term stability. The fuel cell is an electrochemical device that converts chemical energy into electricity by recombining water from H2 and O2, allowing to generate environmentally-friendly power for e.g. cars or houses…
The project Hydrogen Embrittlement Protection Coating (HEPCO) addresses the critical aspects of hydrogen permeation and embrittlement by developing novel strategies for coating and characterizing hydrogen permeation barrier layers for valves and pumps used for hydrogen storage and transport applications.
Efficient harvesting of sunlight and (photo-)electrochemical conversion into solar fuels is an emerging energy technology with enormous promise. Such emerging technologies depend critically on materials systems, in which the integration of dissimilar components and the internal interfaces that arise between them determine the functionality.
In this project, we work on a generic solution to design advanced high-entropy alloys (HEAs) with enhanced magnetic properties. By overturning the concept of stabilizing solid solutions in HEAs, we propose to render the massive solid solutions metastable and trigger spinodal decomposition. The motivation for starting from the HEA for this approach…