Malyar, N.; Micha, J.-S.; Dehm, G.; Kirchlechner, C.: Dislocation slip transfer at Cu grain boundaries analyzed by µLaue diffraction. Gordon Research Seminar Thin Film & Small Scale Mechanical Behavior, Lewiston, ME, USA (2016)
Malyar, N.; Micha, J.-S.; Dehm, G.; Kirchlechner, C.: Dislocation slip transfer at Cu grain boundaries analyzed by µLaue diffraction. Gordon Research Conference Thin Film & Small Scale Mechanical Behavior, Best Poster Prize, Lewiston, ME, USA (2016)
Peter, N. J.; Kirchlechner, C.; Liebscher, C.; Dehm, G.: Effect of the atomistic grain boundary structure on dislocation interaction in copper. Gordon Research Conference (GRC) 2016, Thin Film & Small Scale Mechanical Behavior
, Lewiston, ME, USA (2016)
Luo, W.; Kirchlechner, C.; Dehm, G.; Stein, F.: A New Method to Study the Composition Dependence of Mechanical Properties of Intermetallic Phases. Int. Conf. The Materials Chain: From Discovery to Production, University Bochum, Bochum, Germany (2016)
Meiners, T.; Liebscher, C.; Dehm, G.: Atomic structure and segregation phenomena at copper grain boundaries. EMC2016, The 16th European Microscopy Congress, Lyon, France (2016)
Peter, N. J.; Kirchlechner, C.; Liebscher, C.; Dehm, G.: Beam induced atomic migration at Ag containing nanofacets at an asymmetric Cu grain boundary. European Microscopy Congress (EMC) 2016
, Lyon, France (2016)
Malyar, N.; Jaya, B. N.; Micha, J.-S.; Dehm, G.; Kirchlechner, C.: Orientation dependence of dislocation transmission through twin-boundaries studied by in situ μLaue diffraction. ECI - Nano- and Micromechanical Testing in Materials Research and Development V, Albufeira, Portugal (2015)
Hieke, S. W.; Dehm, G.; Scheu, C.: Electron microscopy investigation of solid state dewetted epitaxial Al thin films on sapphire. International Workshop on Advanced and In-situ Microscopies of Functional Nanomaterials and Devices (IAMNano 2015), Hamburg, Germany (2015)
Hieke, S. W.; Dehm, G.; Scheu, C.: Investigation of solid state dewetting phenomena of epitaxial Al thin films on sapphire using electron microscopy. TEM-UCA: Transmission Electron Microscopy of Nanomaterials - European Summer Workshop (TEM-UCA 2015), Cádiz, Spain (2015)
Hodnik, N.; Dehm, G.; Mayrhofer, K. J. J.: Electrochemical water based in-situ TEM: case study of platinum based nanoparticles potential- and time-dependent changes. IAM Nano 2015 , Hamburg, Germany (2015)
Malyar, N.; Jaya, B. N.; Dehm, G.; Kirchlechner, C.: Dislocation transmission in bi-crystalline micro pillars studied by in situ SEM and in situ µLaue diffraction. Workshop „Understanding Grain Boundary Migration – Theory Meets Experiment”, Günzburg, Germany (2015)
Hieke, S. W.; Dehm, G.; Scheu, C.: Temperature induced faceted hole formation in epitaxial Al thin films on sapphire. 8th International Conference on High Temperature Capillarity (HTC-2015), Bad Herrenalb, Germany (2015)
Luo, W.; Kirchlechner, C.; Dehm, G.; Stein, F.: A New Method to Study the Composition Dependence of Mechanical Properties of Laves Phases. Intermetallics 2015, Educational Center Kloster Banz, Bad Staffelstein, Germany (2015)
Hieke, S. W.; Dehm, G.; Scheu, C.: Solid state dewetting phenomena of epitaxial Al thin films on sapphire (α-Al2O3). 2nd International Multidisplinary Microscopy Congress (InterM 2014), Oludeniz, Fethiye, Turkey (2014)
Jaya, B. N.; Kirchlechner, C.; Dehm, G.: Fracture toughness testing of brittle materials at the micron-scale. Thin Film & Small Scale Mechanical Behavior - Gordon Research Conference, Boston, MA, USA (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…
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.