Zaefferer, S.: Electron diffraction techniques in scanning electron microscopy: fundamentals and state-of-the-art applications of electron backscatter diffraction (EBSD) and electron channelling contrast imaging (ECCI). 27th Annual Meeting of the German Crystallographic Society (DGK), Leipzig, Germany (2019)
Zaefferer, S.: In-situ electron channeling contrast imag-ing (ECCI) to observe the effect of hydro-gen in TWIP steels and superalloys. Physikalisches Kolloquium der Universität Wien, Wien, Austria (2019)
Zaefferer, S.: The importance of microstructures for the energy conversion efficiency of materials for photovoltaic and photothermic applications. Development of Photovoltaic Solar Energy in Africa by the Year 2030, Abidjan, Republik Côte d’Ivoire (2018)
Zaefferer, S.; Abdellaoui, L.; Rogowitz, A.: Controlled electron channelling contrast imaging, cECCI, for quantitative and in-situ characterization of lattice defects in bulk samples of metals and minerals. 19th International Microscopy Conference, Sydney, Australia (2018)
Zaefferer, S.: Understanding the correlation of crystallographic character and corrosion behaviour of grain boundaries in a stainless steel using large-area 3D EBSD. RMS-EBSD conference , Plymouth, UK (2018)
Zaefferer, S.; Shan, Y.; Madivala, M.: Combination of nano-indentation and electron channeling contrast imaging (ECCI) to understand the interaction of hydrogen and dislocations in a high-Mn TWIP steel. Nanobrücken 2018, Erlangen, Germany (2018)
Körkemeyer, F.; Molodov, D. A.; Molodov, K. D.; Dalinger, A.; Gerstein, G.; Tripathi, A.; Zaefferer, S.; Maier, H. J.: Mechanical properties of Mg and Mg alloys during and after high current density pulses. 2nd Conference and Exhibition on Light Materials, Bremen, Germany (2017)
Zaefferer, S.: Observation and quantification of elastic and plastic strain using SEM-based diffraction methods, Part 1. 7th international conference deformation and fracture of materials and nanomaterials, Moscow, Russia (2017)
Zaefferer, S.: Observation and quantification of elastic and plastic strain using SEM-based diffraction methods, Part 2. 7th international conference deformation and fracture of materials and nanomaterials, Moscow, Russia (2017)
An, D.; Zaefferer, S.: Quasi in-situ characterization of dislocation structure evolution during low cycle shear fatigue of high manganese steel. 25th International Conference on Materials and Technology, Portorož, Slovenia (2017)
Tripathi, A.; Zaefferer, S.: Resolution of EBSD in light metals: how good are we? 25th International Conference on Materials and Technology, Portorož, Slovenija (2017)
Hydrogen in aluminium can cause embrittlement and critical failure. However, the behaviour of hydrogen in aluminium was not yet understood. Scientists at the Max-Planck-Institut für Eisenforschung were able to locate hydrogen inside aluminium’s microstructure and designed strategies to trap the hydrogen atoms inside the microstructure. This can…
We will investigate the electrothermomechanical response of individual metallic nanowires as a function of microstructural interfaces from the growth processes. This will be accomplished using in situ SEM 4-point probe-based electrical resistivity measurements and 2-point probe-based impedance measurements, as a function of mechanical strain and…
Hydrogen induced embrittlement of metals is one of the long standing unresolved problems in Materials Science. A hierarchical multiscale approach is used to investigate the underlying atomistic mechanisms.
For understanding the underlying hydrogen embrittlement mechanism in transformation-induced plasticity steels, the process of damage evolution in a model austenite/martensite dual-phase microstructure following hydrogenation was investigated through multi-scale electron channelling contrast imaging and in situ optical microscopy.
This project will aim at developing MEMS based nanoforce sensors with capacitive sensing capabilities. The nanoforce sensors will be further incorporated with in situ SEM and TEM small scale testing systems, for allowing simultaneous visualization of the deformation process during mechanical tests
The project aims to study corrosion, a detrimental process with an enormous impact on global economy, by combining denstiy-functional theory calculations with thermodynamic concepts.
Hydrogen embrittlement affects high-strength ferrite/martensite dual-phase (DP) steels. The associated micromechanisms which lead to failure have not been fully clarified yet. Here we present a quantitative micromechanical analysis of the microstructural damage phenomena in a model DP steel in the presence of hydrogen.
Thermo-chemo-mechanical interactions due to thermally activated and/or mechanically induced processes govern the constitutive behaviour of metallic alloys during production and in service. Understanding these mechanisms and their influence on the material behaviour is of very high relevance for designing new alloys and corresponding…
Nickel-based alloys are a particularly interesting class of materials due to their specific properties such as high-temperature strength, low-temperature ductility and toughness, oxidation resistance, hot-corrosion resistance, and weldability, becoming potential candidates for high-performance components that require corrosion resistance and good…