Dehm, G.; Zhang, Z.; Völker, B.: Structure and strength of metal-ceramic interfaces: New insights by Cs corrected TEM and advances in miniaturized mechanical testing. MS&T 2015 (Materials Science and Technology) meeting, Symposium entitled "Structures and Properties of Grain Boundaries: Towards an atomic-scale understanding of ceramics", Columbus, OH, USA (2015)
Dehm, G.; Harzer, T. P.; Völker, B.; Imrich, P. J.; Zhang, Z.: Towards New Insights on Interface Controlled Materials by Advanced Electron Microscopy. Frontiers of Electron Microscopy in Materials Science Meeting (FEMMS 2015), Lake Tahoe, CA, USA (2015)
Sahu, R.; Völker, B.; Stelzer , B.; Chen, X.; Bliem , P.; Hans, M.; Primetzhofer, D.; Schneider, J. M.; Scheu, C.: Phase transitions in Cr2AlC thin films by in situ TEM heating experiment. Fifth Conference on Frontiers of Aberration Corrected Electron Microscopy, PICO 2019, Vaalsbroek, The Netherlands (2019)
Völker, B.: Investigation of interface properties of barrier metals on dielectric substrates. Dissertation, Department of Physical Metallurgy and Materials Testing, Montanuniversität Leoben, Franz-Josef Strasse 18, 8700, Leoben, Austria (2014)
Dehm, G.; Liebscher, C.; Völker, B.; Scheu, C.: Organizer of the “IAMNano 2019 Düsseldorf” - International Workshop on Advanced In Situ Microscopies of Functional Nanomaterials and Devices. (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…
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.
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.
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
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,...
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…