Chakraborty, J.; Harzer, T. P.; Duarte, M. J.; Dehm, G.: Phase decomposition in nanocrystalline Cr0.8Cu0.2 thin films. Journal of Alloys and Compounds 888, 161391 (2021)
Elhebeary, M.; Harzer, T. P.; Dehm, G.; Saif, M. T. A.: Time-dependent plasticity in silicon microbeams mediated by dislocation nucleation. Proceedings of the National Academy of Sciences of the United States of America 117 (29), pp. 16864 - 16871 (2020)
Harzer, T. P.; Duarte, M. J.; Dehm, G.: In–situ TEM study of diffusion kinetics and electron irradiation effects on the Cr phase separation of a nanocrystalline Cu–4 at.% Cr thin film alloy. Journal of Alloys and Compounds 695, pp. 1583 - 1590 (2017)
Harzer, T. P.; Dehm, G.: Stability, phase separation and oxidation of a supersaturated nanocrystalline Cu–33 at.% Cr thin film alloy. Thin Solid Films 623, pp. 48 - 58 (2017)
Harzer, T. P.; Daniel, R.; Mitterer, C.; Dehm, G.; Zhang, Z. L.: Transmission electron microscopy characterization of CrN films on MgO(001). Thin Solid Films 545, pp. 154 - 160 (2013)
Duarte, M. J.; Harzer, T. P.; Dehm, G.: Towards ultra-strong alloys: thermal stability and diffusion kinetics of thin films by in-situ TEM. CALPHAD XLVII Conference, International Conference on Computer Coupling of Phase Diagrams and Thermochemistry, Querétaro, Mexico (2018)
Dehm, G.; Harzer, T. P.; Liebscher, C.; Raghavan, R.: High Temperature Plasticity of Cu–Cr Nanolayered and Chemically Nanostructured Cu–Cr Films. 2017 TMS Annual Meeting & Exhibition, San Diego, CA, USA (2017)
Dehm, G.; Harzer, T. P.; Dennenwaldt, T.; Freysoldt, C.; Liebscher, C.: Chemical demixing and thermal stability of supersaturated nanocrystalline CuCr alloys: Insights from advanced TEM. MS&T '16, Materials Science & Technology 2016 Conference & Exhibition, Salt Lake City, UT, USA (2016)
Harzer, T. P.; Duarte, M. J.; Dehm, G.: In-situ TEM isothermal annealing of nanocrystalline supersaturated Cu–Cr thin film alloys. 80th Annual Conference of the DPG and DPG Spring Meeting, Regensburg, Germany (2016)
Dehm, G.; Harzer, T. P.; Völker, B.; Imrich, P. J.; Zhang, Z.: Towards New Insights on Interface Controlled Materials by Advanced Electron Microscopy. Frontiers of Electron Microscopy in Materials Science Meeting (FEMMS 2015), Lake Tahoe, CA, USA (2015)
Harzer, T. P.; Djaziri, S.; Raghavan, R.; Dehm, G.: Nanostructure and mechanical behavior of metastable Cu–Cr thin films grown by molecular beam epitaxy. 61. Metallkunde-Kolloquium - Werkstoffforschung für Wirtschaft und Gesellschaft, Lech am Arlberg, Austria (2015)
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,...
Thermo-chemo-mechanical interactions due to thermally activated and/or mechanically induced processes govern the constitutive behaviour of metallic alloys during production and in service. Understanding these mechanisms and their influence on the material behaviour is of very high relevance for designing new alloys and corresponding…