Tripathi, A.; Zaefferer, S.: On the resolution of EBSD across atomic density and accelerating voltage with a particular focus on the light metal magnesium. Ultramicroscopy 207, 112828 (2019)
An, D.; Zaefferer, S.: Formation mechanism of dislocation patterns under low cycle fatigue of a high-manganese austenitic TRIP steel with dominating planar slip mode. International Journal of Plasticity 121, pp. 244 - 260 (2019)
Rogowitz, A.; Zaefferer, S.; Dubosq, R.: Direct observation of dislocation nucleation in pyrite using combined electron channelling contrast imaging and electron backscatter diffraction. Terra Nova 30 (6), pp. 423 - 430 (2018)
Nayyeri, G.; Poole, W. J.; Sinclair, C. W.; Zaefferer, S.: Measurement of the critical resolved shear stress for basal slip in magnesium alloys using instrumented indentation. Scripta Materialia 156, pp. 37 - 41 (2018)
An, D.; Griffiths, T. A.; Konijnenberg, P. J.; Mandal, S.; Wang, Z.; Zaefferer, S.: Correlating the five parameter grain boundary character distribution and the intergranular corrosion behaviour of a stainless steel using 3D orientation microscopy based on mechanical polishing serial sectioning. Acta Materialia 156, pp. 297 - 309 (2018)
Archie, F. M. F.; Zaefferer, S.: On variant selection at the prior austenite grain boundaries in lath martensite and relevant micro-mechanical implications. Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing 731, pp. 539 - 550 (2018)
Breitbarth, E.; Zaefferer, S.; Archie, F. M. F.; Besel, M.; Raabe, D.; Requena, G.: Evolution of dislocation patterns inside the plastic zone introduced by fatigue in an aged aluminium alloy AA2024-T3. Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing 718, pp. 345 - 349 (2018)
Stechmann, G.; Zaefferer, S.; Raabe, D.: Molecular statics simulation of CdTe grain boundary structures and energetics using a bond-order potential. Modelling and Simulation in Materials Science and Engineering 26 (4), 045009 (2018)
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,...