Zaefferer, S.: Advanced applications of SEM-based electron diffraction techniques for the characterization of deformation structures of new steels. E-MRS 2012, Strasbourg, France, Strasbourg, France (2012)
Zaefferer, S.: Dislocations in metals: Observations from the atomic scale to macroscopic dimensions. ICMS Workshop, “Open problems between micro and macro systems of agents and particles”, Eindhoven, The Netherlands (2012)
Ram, F.; Zaefferer, S.: Kikuchi Bandlet Method: A Method to Resolve the Source Point Position of an EBSD Pattern. 20th Annual meeting of the German Crystallographic Society, München, Germany (2012)
Davut, K.; Zaefferer, S.: Improving the Reliability of EBSD-based Texture Analysis by a New Large Area Mapping Technique. International Conference on the Textures of Materials, ICOTOM 16, Mumbai, India (2011)
Konijnenberg, P.; Zaefferer, S.; Lee, S.-B.; Rollett, A. D.; Rohrer, G.; Raabe, D.: Advanced Methods and Tools for Reconstruction and Analysis of Grain Boundaries from 3D-EBSD Data Sets. International Conference on the Textures of Materials, ICOTOM 16, Bombay, India (2011)
Zaefferer, S.: Comprehensive 5-parameter grain boundary description: How to measure it, how to display it and how important is it? ICOTOM 16, Mumbai, India (2011)
Konijnenberg, P.; Zaefferer, S.; Raabe, D.: Advanced Reconstruction and Analysis of Grain Boundaries from 3D-EBSD Data Sets. MRS Fall Meeting 2011, Boston, MA, USA (2011)
Konijnenberg, P.; Zaefferer, S.; Raabe, D.: Advanced Reconstruction and Analysis of Grain Boundaries from 3D-EBSD Data Sets. 3D Microstructure Meeting 2011, Saarbrücken, Germany (2011)
Davut, K.; Zaefferer, S.: Factors influencing the strain-induced transformation of residual austenite in a low-alloyed TRIP steel. Euromat 2011 Conference, Montpellier, France (2011)
Zaefferer, S.; Jäpel, T.; Tasan, C. C.; Konijnenberg, P.: Detailed observation of martensite transformation and twinning in TRIP and TWIP steels using advanced SEM diffraction techniques. ICOMAT 2011, Osaka, Japan (2011)
Zaefferer, S.: Electron diffraction-based techniques in the SEM: Do they give you everything you ever wanted to know about your sample? XIVth ICEM, Wisła, Poland (2011)
Elhami, N.-N.; Zaefferer, S.; Thomas, I.; Hofmann, H.: Observation of the crystallographic defect structure in lightly deformed TWIP steel by means of electron channeling contrast imaging (ECCI). 1st International Conference on High Manganese Steels (HMnS2011), Seoul, South Korea (2011)
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 conduct together with Dr. Sandlöbes at RWTH Aachen and the department of Prof. Neugebauer ab initio calculations for designing new Mg – Li alloys. Ab initio calculations can accurately predict basic structural, mechanical, and functional properties using only the atomic composition as a basis.
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.
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…