Lee, J. S.; Dehm, G.; Best, J. P.; Stein, F.: A Micromechanical Study on the Correlation of Composition and Properties of B2 FeAl across the Interface of an Fe–Al Diffusion Couple. ECR Day, Ruhr Universität Bochum, Bochum, Germany (2024)
Dehm, G.; Devulapalli, V.; Schulz, F.; Soares Barreto, E.; Ellendt, N.; Jägle, E. A.: Strengthening of CoCrFe(Mn)Ni high entropy alloys by dislocation pinning: From Lattice friction & SRO to particle strengthening. Possibilities and Limitations of Quantitative Materials Modeling and Characterization 2024, Bernkastel-kues, Germany (2024)
Vacirca, D.; Bignoli, F.; Li Bassi, A.; Best, J. P.; Dehm, G.; Faurie, D.; Djemia, P.; Ghidelli, M.: Boosting mechanical properties of thin film high entropy alloys through nanoengineering design strategies. 16th International Conference on Local Mechanical Properties, Prague, Czech Republic (2024)
Bhat, M. K.; Brink, T.; Ding, H.; Jung, C.; Best, J. P.; Dehm, G.: Influence of the Structure and Chemistry of Σ5 Grain Boundaries on Microscale Strengthening in Cu Bicrystals. TMS Annual Meeting and Exhibition 2024, Orlando, FL, USA (2024)
Kanjilal, A.; Best, J. P.; Dehm, G.: Elevated temperature deformation of intermetallic phases in Mg–Al–Ca alloy at small length scale. International conference on creep and fracture of engineering materials and structures, Creep 2024, Bangalore, India (2024)
Kini, M. K.; Nandy, S.; Best, J. P.; Dehm, G.: Deformation of CoCrFeNi alloy thin films under thermal fatigue. International Conference on Creep and Fracture of Engineering Materials and Structures CREEP 2024, Bangalore, India (2024)
Kanjilal, A.; Best, J. P.; Dehm, G.: Using in-situ nano- and micromechanical testing to probe the fracture behavior of intermetallic Laves phase materials. 7th International Indentation Workshop – IIW7, Hyderabad, India (2023)
Dehm, G.: Resolving the interplay of structure and energy landscapes of tilt grain boundaries in metals. 3rd ELSICS Conference and Bunsen-Colloquium “Energy Landscapes and Structure in Ion Conducting Solids (ELSICS)”, Ulm, Germany (2023)
Dehm, G.; Liebscher, C.: In situ TEM study of deformation and phase transformation mechanisms in chemically complex alloys. Symposium In-situ & Environmental Microscopy, 20th International Microscopy Congress, Busan, Korea (2023)
Kanjilal, A.; Rehman, U.; Best, J. P.; Dehm, G.: Role of temperature on micromechanical fracture behaviour of Laves phase in Mg–Al–Ca ternary alloy. FEMS EUROMAT 2023, Frankfurt, Germany (2023)
Kanjilal, A.; Rehman, U.; Best, J. P.; Dehm, G.: Role of temperature on micromechanical fracture behavior of Laves phase in Mg–Al–Ca ternary alloy. FEMS Euromat 2023, Frankfurt am Main, Germany (2023)
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…
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.
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…
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.
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
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,...