Ma, Y.; Zaefferer, S.; Raabe, D.: Hydrogen-based direct reduction of iron ores: Microstructure, crystallography, and reduction mechanisms. 2021 International Metallurgical Processes Workshop for Young Scholars (IMPROWYS2021), a hybrid event, Online (2021)
Tsai, S.-P.; Zaefferer, S.: Large-volume 3D EBSD system and its application to the investigation of grain boundary corrosion in 316L stainless steel. 3D MS conference, online (2021)
Zaefferer, S.: Towards understanding hydrogen embrittlement: Tools for microscopic and nanoscopic detection of hydrogen and its mechanical effects in microstructures of steels and superalloys. Colloquium of the Institute of Materials Science, TU Freiberg, online, Freiberg, Germany (2021)
Zaefferer, S.: 2D and 3D SEM-based electron diffraction techniques as central tools for correlative microscopy to obtain new insights into microstructure physics and chemistry. Kolloquium des Zentrums für Elektronenmikroskopie, online, Graz, Österreich (2021)
Zaefferer, S.: Towards understanding hydrogen embrittlement: Tools for microscopic and nanoscopic detection of hydrogen and its mechanical effects in microstructures of steels and superalloys. International e-Conference on Structural Materials for Nuclear and Space Applications (SNSA20), Mumbai, India (2020)
Zaefferer, S.: Investigations on microstructural reasons for Goss texture formation in GO electrical steels - a search for the needle in the haystack. 9th International Conference Magnetism and Metallurgy, Rome, Italy (2020)
Zaefferer, S.: Microstructure Characterization in 2D and 3D using Advanced SEM-based Electron Diffraction Techniques. IISC Colloquium, Bangalore, India (2020)
Zaefferer, S.: Electron Channelling Contrast Imaging (ECCI) – A Technique for Observation and Quantitative In-situ Characterization of Crystal Lattice Defects in Bulk Samples. 12th Asia-Pacific Microscopy Conference (APMC 2020), Hyderabad, India (2020)
Zaefferer, S.: Combination of 2D and 3D SEM-based diffraction techniques with various other techniques for understanding of microstructures. Workshop on correlative microscopy, Chennai, India (2020)
Zaefferer, S.: Microstructure Characterization in 2D and 3D using Advanced SEM-based Electron Diffraction Techniques. Chongqing University Colloquium, Chongqing, China (2019)
Zaefferer, S.: Microstructure Characterization in 2D and 3D using Advanced SEM-based Electron Diffraction Techniques. 3rd Materials Genome Engineering Forum, Kunming, China (2019)
Nandy, S.; Zaefferer, S.: On the role of Ca, Zn and Al for ductilization of Mg alloys. 27th International Conference on Materials and Technology (27 ICM&T), Portoroz, Slovenia (2019)
Zaefferer, S.: Measurement of local residual stresses using cross-correlation EBSD and ring core milling. 27th International Conference on Materials and Technology (26 ICM&T), Portoroz, Slovenia (2019)
Zaefferer, S.: Investigation on the effect of hydrogen on dislocation patterns in high-strength steels using electron channeling contrast imaging in the scanning electron microscope. 15th Multinational Congress on Microscopy, Belgrade, Serbia (2019)
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…
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 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.
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.
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.
Understanding hydrogen-assisted embrittlement of advanced structural materials is essential for enabling future hydrogen-based energy industries. A crucially important phenomenon in this context is the delayed fracture in high-strength structural materials. Factors affecting the hydrogen embrittlement are the hydrogen content,...