Ram, F.; Zaefferer, S.; Jäpel, T.; Raabe, D.: Error analysis of the crystal orientations and disorientations obtained by the classical electron backscatter diffraction technique. Journal of Applied Crystallography 48 (3), pp. 797 - 813 (2015)
Schäffer, A. K.; Jäpel, T.; Zaefferer, S.; Abart, R.; Rhede, D.: Lattice strain across Na–K interdiffusion fronts in alkali feldspar: An electron back-scatter diffraction study. Physics and Chemistry of Minerals 41 (10), pp. 795 - 804 (2014)
Zaefferer, S.; Elhami, N. N.; Konijnenberg, P. J.; Jäpel, T.: Quantitative Microstructure Characterization by Application of Advanced SEM-Based Electron Diffraction Techniques. Microscopy and Microanalysis 2013, Indianapolis, IN, USA (2013)
Jäpel, T.: Grundlagen der Kreuzkorrelationsmethode (delta-EBSD): Einführung in CrossCourt3 (CC3) und Erfahrungen in der praktischen Anwendung von CC3. Seminar Talk at Arbeitskreis EBSD in Garbsen, Garbsen, Germany (2012)
Kords, C.; Jäpel, T.; Eisenlohr, P.; Roters, F.: Residual stress prediction by considering dislocation density advection in 3D applied to single-crystal bending. Euromat 2011, Montpellier, France (2011)
Zaefferer, S.; Jäpel, T.; Tasan, C. C.; Konijnenberg, P.: Detailed observation of martensite transformation and twinning in TRIP and TWIP steels using advanced SEM diffraction techniques. ICOMAT 2011, Osaka, Japan (2011)
Kords, C.; Jäpel, T.; Eisenlohr, P.; Roters, F.: Residual stress prediction by considering dislocation density advection in 3D applied to single-crystal bending. 2nd International Conference on Material Modelling ICMM 2, Paris, France (2011)
Ram, F.; Zaefferer, S.; Jäpel, T.: Error Analysis of the Crystal Orientations and Misorientations obtained by the Classical Electron Backscatter Diffraction Method. RMS EBSD 2014, London, UK (2014)
Ram, F.; Zaefferer, S.; Jäpel, T.: On the accuracy and precision of orientations obtained by the conventional automated EBSD method. RMS EBSD 2014, London, UK (2014)
Jäpel, T.: Feasibility study on local elastic strain measurements with an EBSD pattern cross correlation method in elastic-plastically deforming material. Dissertation, RWTH Aachen, Aachen, Germany (2014)
International researcher team presents a novel microstructure design strategy for lean medium-manganese steels with optimized properties in the journal Science
The goal of this project is the investigation of interplay between the atomic-scale chemistry and the strain rate in affecting the deformation response of Zr-based BMGs. Of special interest are the shear transformation zone nucleation in the elastic regime and the shear band propagation in the plastic regime of BMGs.
Oxides find broad applications as catalysts or in electronic components, however are generally brittle materials where dislocations are difficult to activate in the covalent rigid lattice. Here, the link between plasticity and fracture is critical for wide-scale application of functional oxide materials.
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…
The objective of the project is to investigate grain boundary precipitation in comparison to bulk precipitation in a model Al-Zn-Mg-Cu alloy during aging.
The thorough, mechanism-based, quantitative understanding of dislocation-grain boundary interactions is a central aim of the Nano- and Micromechanics group of the MPIE [1-8]. For this purpose, we isolate a single defined grain boundary in micron-sized sample. Subsequently, we measure and compare the uniaxial compression properties with respect to…
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…