Schemmann, L.; Stallybrass, C.; Schröder, J.; Liessem, A.; Zaefferer, S.: Crack formation in charpy tests of the heat-affected zone of large-diameter linepipe material. 12th International Pipeline Conference, IPC 2018, Calgary, Canada, September 24, 2018 - September 28, 2018. Proceedings of the Biennial International Pipeline Conference, IPC 3, IPC2018-78498, p. V003T05A037 (2018)
Schemmann, L.; Zaefferer, S.; Raabe, D.: Scale-bridging microscopy to reveal the microstructure of martensite-ferrite interfaces in a DP steel. EMC 2012, Manchester, UK, September 16, 2012 - September 21, 2012., (2012)
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)
Schemmann, L.; Romano Triguero, P.; Zaefferer, S.: Eine Untersuchung zur ferritisch-bainitischen Umwandlung in einem Dualphasenstahl unter Verwendung von EBSD-basierten Misorientierungsmessungen. Arbeitskreistreffen: Mikrostrukturcharakterisierung im REM, Düsseldorf, Germany (2014)
Schemmann, L.; Zaefferer, S.: First experiences using a low-energy WDX spectrometer (LEXS) on a FEG-SEM for carbon determination on a martensitic steel. EMAS 2013, Porto, Portugal (2013)
Schemmann, L.; Zaefferer, S.; Raabe, D.: Influence of the inheritance of chemical elements on the transformation behaviour during intercritical annealing of DP steel strips. Euromat 2013, Sevilla, Spain (2013)
Schemmann, L.: The inheritance of different microstructures found after hot rolling on the properties of a completely annealed dual phase steel. Dissertation, Fakultät für Georessourcen und Materialtechnik, RWTH Aachen, Aachen, Germany (2014)
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
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…
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,...