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)
Zaefferer, S.; Schemmann, L.; Stechmann, G.; Ram, F.; Archie, F. M. F.: Using orientation microscopy to explore the correlation of materials properties and microstructures. 25th International conference on materials and technology, Portorož, Slovenia (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…
This project aims to investigate the influence of grain boundaries on mechanical behavior at ultra-high strain rates and low temperatures. For this micropillar compressions on copper bi-crystals containing different grain boundaries will be performed.
Oxidation and corrosion of noble metals is a fundamental problem of crucial importance in the advancement of the long-term renewable energy concept strategy. In our group we use state-of-the-art electrochemical scanning flow cell (SFC) coupled with inductively coupled plasma mass spectrometer (ICP-MS) setup to address the problem.
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.
We plan to investigate the rate-dependent tensile properties of 2D materials such as metal thin films and PbMoO4 (PMO) films by using a combination of a novel plan-view FIB based sample lift out method and a MEMS based in situ tensile testing platform inside a TEM.
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.
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.
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…
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.