Zaefferer, S.; Shan, Y.; Madivala, M.: Nano-indentation and electron channeling contrast imaging (ECCI) to understand the interaction of hydrogen and dislocations in a high-Mn TWIP steel. Euromat 2019, Stockholm, Sweden (2019)
Zaefferer, S.: Understanding hydrogen-embrittlement during fatigue loading of a high-Mn-steel using ECCI and CC-EBSD. RMS-EBSD conference, London, UK (2019)
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)
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…
Smaller is stronger” is well known in micromechanics, but the properties far from the quasi-static regime and the nominal temperatures remain unexplored. This research will bridge this gap on how materials behave under the extreme conditions of strain rate and temperature, to enhance fundamental understanding of their deformation mechanisms. The…
Microbiologically influenced corrosion (MIC) of iron by marine sulfate reducing bacteria (SRB) is studied electrochemically and surfaces of corroded samples have been investigated in a long-term project.
Hydrogen embrittlement (HE) of steel is a great challenge in engineering applications. However, the HE mechanisms are not fully understood. Conventional studies of HE are mostly based on post mortem observations of the microstructure evolution and those results can be misleading due to intermediate H diffusion. Therefore, experiments with a…
We plan to investigate the rate-dependent tensile properties of 2D materials such as HCP 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.
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.
In this project we investigate the hydrogen distribution and desorption behavior in an electrochemically hydrogen-charged binary Ni-Nb model alloy. The aim is to study the role of the delta phase in hydrogen embrittlement of the Ni-base alloy 718.
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…