Springub, G.; Masimov, M.; Peranio, N.; Li, Y. J.; Roters, F.; Raabe, D.: Study of substructure and texture development in dual phase steels due to thermo-mechanical treatment. ITAP3, 3d International Conference on Texture and Anisotropy in Polycrystals, Göttingen, Germany (2009)
Raabe, D.; Demir, E.; Roters, F.: Bending of Single Crystal Copper Micro Cantilever Beams with Cube Orientation: Finite Element Simulation and Experiments. MRS Fall Meeting 2009, Boston, MA, USA (2009)
Raabe, D.; Demir, E.; Roters, F.: Size Dependence of Mechanical Strength Observed During Bending of Beams with Rectangular and Circular Cross Sections. MRS Fall Meeting 2009 , Boston, MA, USA (2009)
Ma, D.; Raabe, D.; Roters, F.: Effects of initial orientation, sample geometry and friction on anisotropy and crystallographic orientation changes in single crystal microcompression deformation: A crystal plasticity finite element study. International workshop on small scale plasticity, Brauwald, Switzerland (2007)
Zambaldi, C.; Roters, F.; Bieler, T. R.; Raabe, D.: Micro-mechanical modeling of near-gamma Ti-Al-Nb. 11th World Conference on Titanium (JIMIC5) Ti-2007, Kyoto, Japan (2007)
Bieler, T. R.; Crimp, M. A.; Roters, F.; Raabe, D.: A Slip Interaction Based measure of Damage Nucleation in Grain boundaries. MMM Third International Conference Multiscale Materials Modeling, Freiburg, Germany (2006)
Bieler, T. R.; Crimp, M. A.; Ma, A.; Roters, F.; Raabe, D.: Slip Interactions Leading to Damage Nucleation in TiAl Grain Boundaries. 3rd International Workshop on - TiAl Technologies, Bamberg, Germany (2006)
Zaafarani, N.; Singh, R.; Zaefferer, S.; Roters, F.; Raabe, D.: 3D experimental investigation and crystal plasticity FEM simulation of the texture and microstructure below a nanoindent in a Cu-single crystal. 6th European Symposium on nano-mechanical Testing (Nanomech 6), Hückelhoven, Germany (2005)
Roters, F.; Zhao, Z.; Raabe, D.: Development of a Grain Fragmentation Criterion and its Validation using Crystal Plasticity FEM Simulations. Meeting, Düsseldorf, Germany (2004)
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…
Oxidation and corrosion of noble metals is a fundamental problem of crucial importance in the advancement of the long-term renewable energy concept strategy. In our group we use state-of-the-art electrochemical scanning flow cell (SFC) coupled with inductively coupled plasma mass spectrometer (ICP-MS) setup to address the problem.
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…
This project aims to investigate the influence of grain boundaries on mechanical behavior at ultra-high strain rates and low temperatures. For this micropillar compressions on copper bi-crystals containing different grain boundaries will be performed.
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.