Weber, F.; Schestakow, I.; Raabe, D.; Roters, F.: Investigation of texture and microstructure in a bent monocrystalline Cu-nanowire using EBSD and crystal plasticity finite element simulations. 7th GAMM Seminar on Microstructures, Bochum, Germany (2008)
Raabe, D.; Roters, F.; Ma, D.; Zaefferer, S.; Friák, M.; Zaafarani, N.: Orientation patterning below indents and Bottom-up mechanical design by using quantum mechanics. Symposium Multiscale Plasticity of Crystalline Materials of the International Union of Theoretical and Applied Mechanics (IUTAM), TU Eindhoven, The Netherlands (2007)
Hantcherli, L.; Eisenlohr, P.; Roters, F.; Raabe, D.: Application of a Phenomenological Approach to Mechanical Twinning in Crystal Plasticity Finite Element Modelling of High-Mn Steel. EUROMAT 2007, Nürnberg, Germany (2007)
Raabe, D.; Zaafarani, N.; Roters, F.; Zaefferer, S.: 3D studies on orientation patterning below nanoindents in Cu single crystals using 3D EBSD and crystal plasticity finite element simulations. 3rd Intern. Indentation Workshop, Cavendish Lab., Cambridge, UK (2007)
Eisenlohr, P.; Roters, F.: Efficient and highly accurate reconstruction of ODFs with discrete orientations using integral approximation. GLADD Meeting, Katholieke Universiteit Leuven, Belgium (2007)
Ma, A.; Roters, F.; Raabe, D.: Introducing the Effect of Grain Boundaries into Crystal Plasticity FEM Using a Non Local Dislocation Density Based Constitutive Model. Theory and Application to FCC Bi-Crystals. Euromech Colloquium 463, MPI für Eisenforschung GmbH, Düsseldorf, Germany (2007)
Bieler, T. R.; Roters, F.; Raabe, D.: Computational modeling of TiAl microstructures which developed microcracked grain boundaries. Bundesanstalt für Materialforschung und -prüfung (BAM), Berlin, Germany (2006)
Bieler, T. R.; Roters, F.; Raabe, D.: Computational modeling of TiAl microstructures which developed microcracked grain boundaries. GKSS Research Center, Geesthacht, Germany (2006)
Raabe, D.; Zaafarani, N.; Roters, F.: 3D Study on Texture and Size Effects Below Nanoindents in Cu Single Crystals Using 3D FIB-EBSD and Crystal Plasticity Finite Element Simulations. MRS Fall Conference, Boston, MA, USA (2006)
Bieler, T. R.; Crimp, M. A.; Roters, F.; Raabe, D.: Computational modeling of TiAl microstructures which developed microcracked grain boundaries. Institut für Metallkunde und Metallphysik RWTH-Aachen, Aachen, Germany (2006)
Bieler, T. R.; Crimp, M. A.; Roters, F.; Raabe, D.: Computational modeling of grain boundary microcrack nucleation using a slip interaction based definition of boundary character. Risø National Laboratories, Roskilde, Denmark (2006)
Nikolov, S.; Raabe, D.; Roters, F.: A Constitutive Model for Glassy Polymers with Shear Transformation Zones Plasticity and Reptation-Based Viscoelasticity. MMM Third International Conference Multiscale Materials Modeling, Freiburg, Germany (2006)
Roters, F.: Constitutive Modeling Based on Physical mechanisms. MMM Third International Conference Multiscale Materials Modeling, Freiburg, Germany (2006)
Zaafarani, N.; Roters, F.; Raabe, D.: A Study of Deformation and texture Evolution during Nanoindentation in a Cu Single Crystal using Phenomenological and Physically-Based Crystal Plasticity FE Models. MMM Third International Conference Multiscale Materials Modeling, Freiburg, Germany (2006)
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…
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…
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.
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,...